Critical security advisoryCriticalFlagged by our vulnerability database: PHP2Shell is on CISA’s exploited list. Most WordPress hosting runs PHP. See if your site is affectedFlagged by our vulnerability database: PHP2Shell is being exploited. DetailsExploited: PHP2Shell. Check your site
HuttenlocherTechnologies
Updated 7 h ago

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.

1,762exploited flaws on CISA’s list
34added in the last 30 days
344new WordPress flaws this week
390,080entries in the database

9 results

  • Dec 19, 2025Flatnux 2021-03.25 contains an authenticated file upload vulnerability that allows administrative users to upload arbitrary PHP files through the file manager.CVE-2023-53956 · Other software · altervista · reported by VulnCheckHigh 8.7

    Flatnux 2021-03.25 contains an authenticated file upload vulnerability that allows administrative users to upload arbitrary PHP files through the file manager. Attackers with admin credentials can upload malicious PHP scripts to the web root directory, enabling remote code execution on the server.

    Product
    flatnux
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Sep 10, 2012Multiple cross-site scripting (XSS) vulnerabilities in FlatnuX CMS 2012-03.08 and earlier allow remote attackers to inject arbitrary web script or HTML via the CVE-2012-4892 · Other software · Flatnux · reported by MITREMedium 4.3

    Multiple cross-site scripting (XSS) vulnerabilities in FlatnuX CMS 2012-03.08 and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) title_en, (2) summary_en, or (3) body_en parameter in a submitnews action to the news module, a different vulnerability than CVE-2012-4890. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

    Product
    Flatnux
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Sep 10, 2012Multiple cross-site scripting (XSS) vulnerabilities in FlatnuX CMS 2011 08.09.2 and earlier allow remote attackers to inject arbitrary web script or HTML via a CVE-2012-4890 · Other software · Flatnux · reported by MITREMedium 4.3

    Multiple cross-site scripting (XSS) vulnerabilities in FlatnuX CMS 2011 08.09.2 and earlier allow remote attackers to inject arbitrary web script or HTML via a (1) comment to the news, (2) title to the news, or (3) the folder names in a gallery.

    Product
    Flatnux
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Sep 6, 2012Absolute path traversal vulnerability in controlcenter.php in FlatnuX CMS 2011 08.09.2 allows remote administrators to read arbitrary files via a full pathname CVE-2012-4878 · Other software · Flatnux · reported by MITREMedium 5

    Absolute path traversal vulnerability in controlcenter.php in FlatnuX CMS 2011 08.09.2 allows remote administrators to read arbitrary files via a full pathname in the dir parameter in a contents/Files action.

    Product
    Flatnux
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Sep 6, 2012Cross-site request forgery (CSRF) vulnerability in controlcenter.php in FlatnuX CMS 2011 08.09.2 and earlier allows remote attackers to hijack the authenticatioCVE-2012-4877 · Other software · Flatnux · reported by MITREMedium 6.8

    Cross-site request forgery (CSRF) vulnerability in controlcenter.php in FlatnuX CMS 2011 08.09.2 and earlier allows remote attackers to hijack the authentication of administrators for requests that add user accounts.

    Product
    Flatnux
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Feb 13, 2009PHP remote file inclusion vulnerability in include/flatnux.php in FlatnuX CMS (aka Flatnuke3) 2009-01-27 and 2009-02-04, when register_globals is enabled and maCVE-2009-0572 · Other software · Flatnux · reported by MITREMedium 5.1

    PHP remote file inclusion vulnerability in include/flatnux.php in FlatnuX CMS (aka Flatnuke3) 2009-01-27 and 2009-02-04, when register_globals is enabled and magic_quotes_gpc disabled, allows remote attackers to execute arbitrary PHP code via a URL in the _FNROOTPATH parameter to (1) index.php and (2) filemanager.php.

    Product
    Flatnux
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 30, 2008Multiple cross-site scripting (XSS) vulnerabilities in FlatnuX CMS (aka Flatnuke3) 2008-12-11 allow remote attackers to inject arbitrary web script or HTML via CVE-2008-5761 · Other software · Flatnux · reported by MITREMedium 4.3

    Multiple cross-site scripting (XSS) vulnerabilities in FlatnuX CMS (aka Flatnuke3) 2008-12-11 allow remote attackers to inject arbitrary web script or HTML via (1) the mod parameter to the default URI; (2) the foto parameter to photo.php in the 05_Foto module; or (3) the name parameter in an insertrecord action to index.php in the 08_Files module, as demonstrated by injection within a SRC attribute of an IFRAME element.

    Product
    Flatnux
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Dec 30, 2008Cross-site scripting (XSS) vulnerability in FlatnuX CMS (aka Flatnuke3) 2008-12-11 allows remote attackers to inject arbitrary web script or HTML via the name pCVE-2008-5759 · Other software · Flatnux · reported by MITREMedium 4.3

    Cross-site scripting (XSS) vulnerability in FlatnuX CMS (aka Flatnuke3) 2008-12-11 allows remote attackers to inject arbitrary web script or HTML via the name parameter in an updaterecord action to index.php in the 08_Files module. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

    Product
    Flatnux
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Nov 1, 2007Flatnuke 3 (aka FlatnuX) allows remote attackers to obtain administrative access via a myforum%00 cookie.CVE-2007-5771 · Other software · Flatnuke3 · reported by MITREHigh 7.5

    Flatnuke 3 (aka FlatnuX) allows remote attackers to obtain administrative access via a myforum%00 cookie.

    Product
    Flatnuke3
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.

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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