{
 "id": "WPSEC-2026-3033",
 "url": "https://wpsec.com/vuln/WPSEC-2026-3033/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-3033/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-3033/index.md",
 "title": "WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN) <= 45.2 - Unauthenticated Authentication Bypass via SAML Signature Verification",
 "description": "The WPO365 | LOGIN plugin for WordPress is vulnerable to Authentication Bypass via SAML 2.0 signature verification in all versions up to, and including, 45.2, due to the bundled xmlseclibs library accepting a false or empty canonicalization result and evaluating XPath transforms taken from the document during signature verification (CVE-2025-66475, CVE-2025-66578, GHSA-7mf5-fjj8-mvjc). This makes it possible for unauthenticated attackers to submit a crafted SAML response that passes the signature check and sign in as another user, potentially an administrator. Exploitation requires SAML 2.0 single sign-on to be configured on the site.",
 "plugin": {
  "slug": "wpo365-login",
  "name": "WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN)",
  "full_name": "WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN)",
  "wordpress_org": "https://wordpress.org/plugins/wpo365-login/",
  "advisories_url": "https://wpsec.com/vuln/plugin/wpo365-login/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/wpo365-login"
 },
 "type": "AUTHBYPASS",
 "cwe": [
  "CWE-347"
 ],
 "cve": [],
 "cvss": {
  "version": "3.1",
  "score": 8.1,
  "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "severity": "High"
 },
 "affected": {
  "ranges": [
   {
    "from": null,
    "from_inclusive": true,
    "to": "45.3",
    "to_inclusive": false
   }
  ],
  "text": [
   "all versions before 45.3"
  ]
 },
 "introduced_in": null,
 "fixed_in": "45.3",
 "remediation": "Update to 45.3 or later.",
 "fix_released": "2026-11-12T08:35:11+00:00",
 "published": "2026-11-13T08:44:14+00:00",
 "updated": "2026-11-12T17:04:43.119366+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-3033/",
  "https://plugins.svn.wordpress.org/wpo365-login/tags/45.3/",
  "https://wordpress.org/plugins/wpo365-login/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/wpo365-login",
 "source": "WPSec",
 "license": {
  "name": "CC BY 4.0",
  "url": "https://creativecommons.org/licenses/by/4.0/"
 },
 "usage": {
  "plugin": "Medium",
  "affected_versions": "Medium",
  "as_of": "2026-11-13"
 }
}