CVE-2026-73317: medium-severity vulnerability in XenForo
XenForo < 2.3.13 Missing Authorization via ACP Cache-Rebuild Dispatcher
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 5.1epss 0.4%
XenForo before 2.3.13 contains a missing authorization vulnerability in the ACP cache-rebuild dispatcher that allows limited administrators with only the rebuildCache permission to perform unauthorized approval queue actions by supplying an arbitrary job class and actor user ID in the POST body. Attackers can invoke the approval queue job under any user identity to approve queued user registrations without holding the required approval-queue or moderator permissions, causing the moderation log to attribute actions to an impersonated account.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Affected products
XenForo · XenForopublic PoCs found — 1
cve_referencegithub.com/BomboBombone/CVE-2026-73317★ 1⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — XenForo
In the same product, most dangerous first.
CVE-2026-74239HIGHXenForo < 2.3.13 Path Traversal via Style Archive Importer on WindowsEPSS 0.9%CVE-2026-73309CRITICALXenForo < 2.3.13 Authentication Bypass via OAuth2 Token EndpointEPSS 0.7%CVE-2026-35056HIGHXenForo Remote Code Execution via Authenticated AdminEPSS 0.7%CVE-2026-73314HIGHXenForo < 2.3.13 Signature Verification Bypass via PayPal REST WebhookEPSS 0.7%CVE-2026-73321HIGHXenForo < 2.3.13 Uncontrolled Recursion DoS via BBCode ParserEPSS 0.6%CVE-2026-73313HIGHXenForo < 2.3.13 MFA Bypass via Passkey TFA ProviderEPSS 0.6%
References
https://bombobombone.github.io/posts/cve-2026-73317/https://github.com/BomboBombone/CVE-2026-73317https://www.vulncheck.com/advisories/xenforo-missing-authorization-via-acp-cache-rebuild-dispatcherhttps://xenforo.com/community/threads/security-fixes-released-for-all-xenforo-and-media-gallery-versions-2-2-0-2-3-12.239856/https://xenforo.com/community/threads/xenforo-2-3-13-and-add-ons-released-includes-security-fixes.239857/