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.
8 results
Apr 16, 2026OneSignal – Web Push Notifications: Authorization bypassCVE-2026-3155 · WordPress plugins & themes · reported by WordfenceLow 3.1
The OneSignal – Web Push Notifications plugin for WordPress is vulnerable to authorization bypass in versions up to, and including, 3.8.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete OneSignal metadata for arbitrary posts.
- Product
- OneSignal – Web Push Notifications
- Affected
- up to 3.8.0
- What to do
- Affects up to 3.8.0. Update OneSignal – Web Push Notifications 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
Dec 15, 2025OneSignal – Web Push Notifications: Unauthorized modification of dataCVE-2025-13950 · WordPress plugins & themes · reported by WordfenceMedium 5.3
The OneSignal – Web Push Notifications plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the settings handling functionality in all versions up to, and including, 3.6.1. This is due to the plugin processing POST requests without verifying user capabilities or nonces. This makes it possible for unauthenticated attackers to overwrite the OneSignal App ID, REST API key, and notification behavior via direct POST requests.
- Product
- OneSignal – Web Push Notifications
- Affected
- up to 3.6.1
- What to do
- Affects up to 3.6.1. Update OneSignal – Web Push Notifications 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 recordgithub.comwordfence.com
Mar 27, 2023OneSignal is an email, sms, push notification, and in-app message service for mobile apps.The Zapier.yml workflow is triggered on issues (types: [closed]) (i.e.CVE-2023-28430 · Other software · OneSignal · reported by GitHubHigh 7.3
OneSignal is an email, sms, push notification, and in-app message service for mobile apps.The Zapier.yml workflow is triggered on issues (types: [closed]) (i.e., when an Issue is closed). The workflow starts with full write-permissions GitHub repository token since the default workflow permissions on Organization/Repository level are set to read-write. This workflow runs the following step with data controlled by the comment `(${{ github.event.issue.title }} – the full title of the Issue)`, allowing an attacker to take over the GitHub Runner and run custom commands, potentially stealing any secret (if used), or altering the repository. This issue was found with CodeQL using javascript’s Expression injection in Actions query. This issue has been addressed in the repositories github action. No actions are required by users. This issue is also tracked as `GHSL-2023-051`.
- Product
- react-native-onesignal
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 30, 2019The onesignal-free-web-push-notifications plugin before 1.17.8 for WordPress has XSS via the subdomain parameter.CVE-2019-15827 · WordPress plugins & themes · reported by MITREMedium 5.4
The onesignal-free-web-push-notifications plugin before 1.17.8 for WordPress has XSS via the subdomain parameter.
- Product
- onesignal-free-web-push-notifications
- Fixed in
- 1.17.8
- What to do
- Update onesignal-free-web-push-notifications to 1.17.8 or newer.
Full record and what to do →NVD recordwordpress.orgwpvulndb.com
Aug 21, 2019The smokesignal plugin before 1.2.7 for WordPress has XSS.CVE-2017-18535 · WordPress plugins & themes · reported by MITREMedium 6.1
The smokesignal plugin before 1.2.7 for WordPress has XSS.
- Product
- smokesignal
- Fixed in
- 1.2.7
- What to do
- Update smokesignal to 1.2.7 or newer.
Full record and what to do →NVD recordwordpress.orgwordpress.org
Sep 16, 2011Untrusted search path vulnerability in eSignal 10.6.2425.1208, and possibly other versions, allows local users, and possibly remote attackers, to execute arbitrCVE-2011-3503 · Other software · Interactivedata · reported by MITREHigh 9.3
Untrusted search path vulnerability in eSignal 10.6.2425.1208, and possibly other versions, allows local users, and possibly remote attackers, to execute arbitrary code and conduct DLL hijacking attacks via a Trojan horse JRS_UT.dll that is located in the same folder as a .quo (QUOTE) file. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
- Product
- Esignal
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 16, 2011WinSig.exe in eSignal 10.6.2425 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via (1) a long StylCVE-2011-3494 · Other software · Interactivedata · reported by MITREHigh 10
WinSig.exe in eSignal 10.6.2425 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via (1) a long StyleTemplate element in a QUO, SUM or POR file, which triggers a stack-based buffer overflow, or (2) a long Font->FaceName field (aka FaceName element), which triggers a heap-based buffer overflow. NOTE: some of these details are obtained from third party information.
- Product
- Esignal
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaluigi.altervista.orgsecunia.com
Mar 25, 2004Stack-based buffer overflow in WinSig.exe in eSignal 7.5 and 7.6 allows remote attackers to execute arbitrary code via a long STREAMQUOTE tag.CVE-2004-1868 · Other software · Esignal · reported by MITREHigh 7.5
Stack-based buffer overflow in WinSig.exe in eSignal 7.5 and 7.6 allows remote attackers to execute arbitrary code via a long STREAMQUOTE tag.
- Product
- Esignal
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordarchives.neohapsis.commarc.info
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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