Disclosure summary
The WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN) plugin for WordPress is vulnerable to Authentication Bypass via OIDC Nonce Replay in all versions up to, and including, 44.1 This is due to `Id_Token_Service_Deprecated::process_openidconnect_token()` using the incompatible WordPress core `wp_verify_nonce()` function to validate a nonce produced by `Nonce_Service::create_nonce()` — a 64-character hex value that `wp_verify_nonce()` can never successfully verify — causing the nonce check to silently fail without terminating authentication, so execution continues into `authenticate_oidc_user()` with the attacker-supplied `id_token`. This makes it possible for unauthenticated attackers who have obtained a previously-issued, valid `id_token` for a target account to replay that token and authenticate as any WordPress user, including administrators, resulting in full site takeover. This vulnerability is only exploitable when the `use_id_token_parser_v2` plugin option is enabled, as this is the configuration that routes token processing through the deprecated parser containing the broken nonce check.
Source-reported weakness categories
CWE-287
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
CVEProject/cvelistV5 releases · RSS-2b11a7e1dade072c26c14342ed52b8ffeb8
Open original source · Updated Oct 10, 2026
CVE 2026-10-10_2300Z
CVE mention in publisher metadata; check the original affected versions.
CVEProject/cvelistV5 releases · RSS-f946067cb6a34653c12f3a7d3e105773b0f
Open original source · Updated Oct 10, 2026
CVE 2026-10-10_2200Z
CVE mention in publisher metadata; check the original affected versions.
CVEProject/cvelistV5 releases · RSS-7c1aa4e02ee105026a9d5ef835739da2231
Open original source · Updated Oct 10, 2026
CVE 2026-10-10_2100Z
CVE mention in publisher metadata; check the original affected versions.
CVEProject/cvelistV5 releases · RSS-5daad76275e9590636f1bfed69854f874d0
Open original source · Updated Oct 10, 2026
CVE 2026-10-10_2000Z
CVE mention in publisher metadata; check the original affected versions.
CVEProject/cvelistV5 releases · RSS-f5a41e504aba4034d4f99f9de25577fb6a1
Open original source · Updated Oct 10, 2026
CVE 2026-10-10_1900Z
CVE mention in publisher metadata; check the original affected versions.
CVEProject/cvelistV5 releases · RSS-f5dee9e139662097b84b17b3e74d5544c25
Open original source · Updated Oct 10, 2026
CVE 2026-10-10_1800Z
CVE mention in publisher metadata; check the original affected versions.
CVEProject/cvelistV5 releases · RSS-6729502a4ea3125ddd379f75d3eb8cb63a6
Open original source · Updated Oct 10, 2026
CVE 2026-10-10_1700Z
CVE mention in publisher metadata; check the original affected versions.
CVEProject/cvelistV5 releases · RSS-a10ecc85ff20aad80a7e8436dd92befdcfc
Open original source · Updated Oct 10, 2026
CVE 2026-10-10_1600Z
CVE mention in publisher metadata; check the original affected versions.
CVEProject/cvelistV5 releases · RSS-5f26de48c2d7605f54c0980f1221b67644b
Open original source · Updated Oct 10, 2026
CVE 2026-10-10_1500Z
CVE mention in publisher metadata; check the original affected versions.
CVEProject/cvelistV5 releases · RSS-95eb7d8256449b8a75dc66291b65bfe37a2
Open original source · Updated Oct 10, 2026
CVE 2026-10-10_1400Z
CVE mention in publisher metadata; check the original affected versions.
NIST National Vulnerability Database · NVD-CVE-2026-104759
Open original source · Updated Oct 10, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
Original records & references
- NIST NVD record
- CVE Program record
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- www.wordfence.com
PUBLISHED 2026-10-10T04:17:04-04:00
MODIFIED 2026-10-10T04:17:04-04:00
INGESTED 2026-10-10T20:55:12-04:00