CVE-2026-73318CWE-863broken-access-control

CVE-2026-73318

Low · published September 8, 2026

CVSS v3.1

3.8

EPSS

Percentile

41.2

In the wild

Unconfirmed

What it is

XenForo before 2.3.13 contains a missing authorization vulnerability in the force-agreement controller that allows any ACP administrator to access and submit force-agreement forms regardless of their assigned permissions. Attackers can bypass the option permission declared in the navigation configuration to update the global policy last-updated timestamp, forcing all users to re-agree to the privacy policy or terms of service.

The record

Technical detail

CVSS v3.1: 3.8 · LOW
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L
CVSS v4.0: 5.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
EPSS: 0.00490 · 41.2th percentile
Weakness: CWE-863 · Incorrect Authorization
Published: 2026-09-08T18:17Z

Affected products (1)

Product	Versions	Fixed in
xenforo/xenforo	< 2.3.13	2.3.13

References (5)

https://bombobombone.github.io/posts/cve-2026-73318/ · [email protected]https://github.com/BomboBombone/CVE-2026-73318 · [email protected]https://www.vulncheck.com/advisories/xenforo-missing-authorization-via-force-agreement-controller · [email protected]https://xenforo.com/community/threads/security-fixes-released-for-all-xenforo-and-media-gallery-versions-2-2-0-2-3-12.239856/ · [email protected]https://xenforo.com/community/threads/xenforo-2-3-13-and-add-ons-released-includes-security-fixes.239857/ · [email protected]

EPSS history

Timeline

10 SEP 03:18Z
EPSS moved — → 0%
epss
08 SEP 13:19Z
XenForo < 2.3.13 Missing Authorization via force-agreement Controller
cvelistv5