Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
24 results
Sep 12, 2026WP Highlight Box: Does not escape some shortcode attributes before outputting them in a page where the shortcode is embeddedCVE-2026-86790 · WordPress plugins & themes · reported by WPScanMedium 6.8
The WP Highlight Box WordPress plugin through 1.0 does not escape some shortcode attributes before outputting them in a page where the shortcode is embedded, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
- Product
- WP Highlight Box
- Affected
- up to 1.0
- What to do
- Affects up to 1.0. Update WP Highlight Box to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Jul 10, 2026Highlighting Code Block: Stored Cross-Site ScriptingCVE-2026-12108 · WordPress plugins & themes · reported by WordfenceMedium 4.4
The Highlighting Code Block plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 2.2.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
- Product
- Highlighting Code Block
- Affected
- up to 2.2.0
- What to do
- Affects up to 2.2.0. Update Highlighting Code Block to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
May 27, 2026Easy Prism Syntax Highlighter: Stored Cross-Site ScriptingCVE-2026-8875 · WordPress plugins & themes · reported by WordfenceMedium 6.4
The Easy Prism Syntax Highlighter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'code' (and 'c') shortcode in versions up to, and including, 1.0.2. This is due to insufficient input sanitization and output escaping on user supplied shortcode attributes in the shortcode() function, which concatenates the first positional attribute directly into the class attribute of the generated <pre>/<code> HTML without calling esc_attr() or any other escaping function. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
- Product
- Easy Prism Syntax Highlighter
- Affected
- up to 1.0.2
- What to do
- Affects up to 1.0.2. Update Easy Prism Syntax Highlighter to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
May 27, 2026Old Posts Highlighter: Cross-Site Request ForgeryCVE-2026-7614 · WordPress plugins & themes · reported by WordfenceMedium 4.3
The Old Posts Highlighter plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0.3. This is due to missing or incorrect nonce validation on the OPH_options function. This makes it possible for unauthenticated attackers to update the plugin's configuration settings without authorization via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
- Product
- Old Posts Highlighter
- Affected
- up to 1.0.3
- What to do
- Affects up to 1.0.3. Update Old Posts Highlighter to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Jan 22, 2026Syntax Highlighter Compress: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CVE-2025-68859 · WordPress plugins & themes · reported by PatchstackHigh 7.1
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in agmorpheus Syntax Highlighter Compress syntax-highlighter-compress allows Reflected XSS.This issue affects Syntax Highlighter Compress: from n/a through <= 3.0.83.3.
- Product
- Syntax Highlighter Compress
- Affected
- up to 3.0.83.3
- What to do
- Affects up to 3.0.83.3. Update Syntax Highlighter Compress to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Dec 9, 2025Highlight and Share: Missing AuthorizationCVE-2025-67586 · WordPress plugins & themes · reported by PatchstackMedium 4.7
Missing Authorization vulnerability in Ronald Huereca Highlight and Share highlight-and-share allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Highlight and Share: from n/a through <= 5.2.0.
- Product
- Highlight and Share
- Affected
- up to 5.2.0
- What to do
- Affects up to 5.2.0. Update Highlight and Share to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Nov 25, 2025Just Highlight: Stored Cross-Site ScriptingCVE-2025-13311 · WordPress plugins & themes · reported by WordfenceMedium 4.4
The Just Highlight plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Highlight Color' setting in all versions up to, and including, 1.0.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the plugin's settings page.
- Product
- Just Highlight
- Affected
- up to 1.0.3
- What to do
- Affects up to 1.0.3. Update Just Highlight to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Sep 22, 2025Highlight and Share: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CVE-2025-58260 · WordPress plugins & themes · reported by PatchstackMedium 6.5
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Ronald Huereca Highlight and Share highlight-and-share allows Stored XSS.This issue affects Highlight and Share: from n/a through <= 5.1.1.
- Product
- Highlight and Share
- Affected
- up to 5.1.1
- What to do
- Affects up to 5.1.1. Update Highlight and Share to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Apr 10, 2025WP-GeSHi-Highlight — rock-solid syntax highlighting for 259 languages: Processes user-supplied inputCVE-2024-13896 · WordPress plugins & themes · reported by WPScanMedium 6.5
The WP-GeSHi-Highlight — rock-solid syntax highlighting for 259 languages WordPress plugin through 1.4.3 processes user-supplied input as a regular expression via the wp_geshi_filter_replace_code() function, which could lead to Regular Expression Denial of Service (ReDoS) issue
- Product
- WP-GeSHi-Highlight — rock-solid syntax highlighting for 259 languages
- Affected
- up to 1.4.3
- What to do
- Affects up to 1.4.3. Update WP-GeSHi-Highlight — rock-solid syntax highlighting for 259 languages to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Apr 3, 2025Search engine keywords highlighter: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CVE-2025-31442 · WordPress plugins & themes · reported by PatchstackHigh 7.1
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in e1tekoap42 Search engine keywords highlighter keywords-highlight-tool allows Reflected XSS.This issue affects Search engine keywords highlighter: from n/a through <= 0.1.3.
- Product
- Search engine keywords highlighter
- Affected
- up to 0.1.3
- What to do
- Affects up to 0.1.3. Update Search engine keywords highlighter to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Mar 27, 2025SyntaxHighlighter Evolved: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CVE-2025-30903 · WordPress plugins & themes · reported by PatchstackMedium 6.5
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Alex Mills SyntaxHighlighter Evolved syntaxhighlighter allows DOM-Based XSS.This issue affects SyntaxHighlighter Evolved: from n/a through <= 3.7.1.
- Product
- SyntaxHighlighter Evolved
- Affected
- up to 3.7.1
- What to do
- Affects up to 3.7.1. Update SyntaxHighlighter Evolved to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Jan 7, 2025Highlight: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CVE-2024-56297 · WordPress plugins & themes · reported by PatchstackMedium 5.9
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in QuantumCloud Highlight highlight allows Stored XSS.This issue affects Highlight: from n/a through <= 2.0.2.
- Product
- Highlight
- Affected
- up to 2.0.2
- What to do
- Affects up to 2.0.2. Update Highlight to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Jan 2, 2025Highlight: Cross-Site Request Forgery (CSRF)CVE-2024-37458 · WordPress plugins & themes · reported by PatchstackMedium 4.3
Cross-Site Request Forgery (CSRF) vulnerability in extendthemes Highlight highlight allows Cross Site Request Forgery.This issue affects Highlight: from n/a through <= 1.0.29.
- Product
- Highlight
- Affected
- up to 1.0.29
- What to do
- Affects up to 1.0.29. Update Highlight to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Dec 16, 2024CK and SyntaxHighlighter: Cross-Site Request Forgery (CSRF)CVE-2024-54407 · WordPress plugins & themes · reported by PatchstackHigh 7.1
Cross-Site Request Forgery (CSRF) vulnerability in a328496647 CK and SyntaxHighlighter ck-and-syntaxhighlighter allows Stored XSS.This issue affects CK and SyntaxHighlighter: from n/a through <= 3.4.2.
- Product
- CK and SyntaxHighlighter
- Affected
- up to 3.4.2
- What to do
- Affects up to 3.4.2. Update CK and SyntaxHighlighter to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Oct 12, 2023Cross-Site Request Forgery (CSRF) vulnerability in Fedor Urvanov, Aram Kocharyan Urvanov Syntax Highlighter plugin <= 2.8.33 versions.CVE-2023-45106 · WordPress plugins & themes · reported by PatchstackMedium 4.3
Cross-Site Request Forgery (CSRF) vulnerability in Fedor Urvanov, Aram Kocharyan Urvanov Syntax Highlighter plugin <= 2.8.33 versions.
- Affected
- up to 2.8.33
- What to do
- Affects up to 2.8.33. Update the plugin to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordpatchstack.compatchstack.com
Sep 11, 2023Crayon Syntax Highlighter: Server Side Request ForgeryCVE-2023-4893 · WordPress plugins & themes · reported by WordfenceMedium 6.4
The Crayon Syntax Highlighter plugin for WordPress is vulnerable to Server Side Request Forgery via the 'crayon' shortcode in versions up to, and including, 2.8.4. This can allow authenticated attackers with contributor-level permissions or above to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.
- Product
- Crayon Syntax Highlighter
- Affected
- up to 2.8.4
- What to do
- Affects up to 2.8.4. Update Crayon Syntax Highlighter to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordplugins.trac.wordpress.orgwordfence.com
May 22, 2023Cross-Site Request Forgery (CSRF) vulnerability in Aram Kocharyan Crayon Syntax Highlighter plugin <= 2.8.4 versions.CVE-2022-47167 · WordPress plugins & themes · reported by PatchstackMedium 5.4
Cross-Site Request Forgery (CSRF) vulnerability in Aram Kocharyan Crayon Syntax Highlighter plugin <= 2.8.4 versions.
- Affected
- up to 2.8.4
- What to do
- Affects up to 2.8.4. Update the plugin to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordpatchstack.compatchstack.com
Nov 7, 2022Highlight Focus: Does not sanitise and escape some of its settingsCVE-2022-3462 · WordPress plugins & themes · reported by WPScanMedium 4.8
The Highlight Focus WordPress plugin through 1.1 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)
- Product
- Highlight Focus
- Affected
- up to 1.1
- What to do
- Affects up to 1.1. Update Highlight Focus to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Sep 6, 2021Highlight: Does not sanitise its CustomCSS settingCVE-2021-24591 · WordPress plugins & themes · reported by WPScanMedium 5.4
The Highlight WordPress plugin before 0.9.3 does not sanitise its CustomCSS setting, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed
- Product
- Highlight
- Fixed in
- 0.9.3
- What to do
- Update Highlight to 0.9.3 or newer.
Sep 6, 2021A c GET parameter of the Comment Highlighter WordPress plugin through 0.13 is not properly sanitised, escaped or validated before inserting to a SQL statement, CVE-2021-24393 · WordPress plugins & themes · reported by WPScanHigh 7.2
A c GET parameter of the Comment Highlighter WordPress plugin through 0.13 is not properly sanitised, escaped or validated before inserting to a SQL statement, leading to SQL injection.
- Product
- Comment Highlighter
- Affected
- up to 0.13
- What to do
- Affects up to 0.13. Update Comment Highlighter to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordcodevigilant.comwpscan.com
Aug 20, 2019The crayon-syntax-highlighter plugin before 2.8.4 for WordPress has multiple XSS issues via AJAX requests.CVE-2016-10893 · WordPress plugins & themes · reported by MITREMedium 6.1
The crayon-syntax-highlighter plugin before 2.8.4 for WordPress has multiple XSS issues via AJAX requests.
- Product
- crayon-syntax-highlighter
- Fixed in
- 2.8.4
- What to do
- Update crayon-syntax-highlighter to 2.8.4 or newer.
Jul 19, 2019An issue was discovered in the wp-code-highlightjs plugin through 0.6.2 for WordPress.CVE-2019-12934 · WordPress plugins & themes · reported by MITREHigh 8.8
An issue was discovered in the wp-code-highlightjs plugin through 0.6.2 for WordPress. wp-admin/options-general.php?page=wp-code-highlight-js allows CSRF, as demonstrated by an XSS payload in the hljs_additional_css parameter.
- Product
- An issue was discovered in the wp-code-highlightjs
- Affected
- up to 0.6.2
- What to do
- Affects up to 0.6.2. Update An issue was discovered in the wp-code-highlightjs to the newest version and check its changelog mentions this fix; if there isn’t one yet, deactivate it until there is.
Full record and what to do →NVD recordsecurityfocus.comwordpress.org
Oct 16, 2017Cross-site scripting (XSS) vulnerability in the post highlights plugin before 2.6.1 for WordPress allows remote attackers to inject arbitrary web script or HTMLCVE-2014-8087 · WordPress plugins & themes · reported by MITREMedium 6.1
Cross-site scripting (XSS) vulnerability in the post highlights plugin before 2.6.1 for WordPress allows remote attackers to inject arbitrary web script or HTML via the txt parameter in a headline action to ajax/ph_save.php.
- Product
- Cross-site scripting (XSS) vulnerability in the post highlights
- Fixed in
- 2.6.1
- What to do
- Update Cross-site scripting (XSS) vulnerability in the post highlights to 2.6.1 or newer.
Full record and what to do →NVD recordg0blin.co.ukwordpress.org
Feb 28, 2008modules/syntax_highlight.php in the Sniplets 1.1.2 and 1.2.2 plugin for: PHP remote file inclusionCVE-2008-1059 · WordPress plugins & themes · reported by MITREHigh 7.5
PHP remote file inclusion vulnerability in modules/syntax_highlight.php in the Sniplets 1.1.2 and 1.2.2 plugin for WordPress allows remote attackers to execute arbitrary PHP code via a URL in the libpath parameter.
- Product
- modules/syntax_highlight.php in the Sniplets 1.1.2 and 1.2.2 plugin for
- What to do
- Update modules/syntax_highlight.php in the Sniplets 1.1.2 and 1.2.2 plugin for to the newest version.
Full record and what to do →NVD recordsecunia.comsecurityreason.com
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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