Vulnerability · Published Apr 17, 2026 · Assigned by GitHub_M

CVE-2026-40474wger has Broken Access Control in the Global Gym Configuration Update Endpoint

High 7.6

In plain English

A high-severity improper access control in wger from wger-project. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).

Severity (CVSS 3.1)7.6High

Exploit odds (30 days)0.3%top 73.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

wger is a free, open-source workout and fitness manager. In versions 2.5 and below, the GymConfigUpdateView declares permission_required = 'config.change_gymconfig' but inherits WgerFormMixin instead of WgerPermissionMixin, so the permission is never enforced at runtime. Since GymConfig is an ownerless singleton, any authenticated user can modify the global gym configuration, triggering save() side effects that bulk-update user profile gym assignments — a vertical privilege escalation to installation-wide configuration control. This issue is fixed in version 2.5.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	wger	no fix listed	GHSA-xppv-4jrx-qf8m
PyPI	wger	no fix listed	PYSEC-2026-3424

Affected products (as reported)

Vendor	Product	Versions
wger-project	wger	< 2.5

Weakness: CWE-284, CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

References

https://github.com/wger-project/wger/security/advisories/GHSA-xppv-4jrx-qf8m x_refsource_CONFIRM
https://github.com/wger-project/wger/commit/47ee5af93b3ced24b9f94b0a8b9296b50bc9523f x_refsource_MISC
https://github.com/wger-project/wger/releases/tag/2.5 x_refsource_MISC