What is CVE-2026-27838?

CVE-2026-27838 is a low-severity vulnerability in Wger-project Wger, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 3.1/10. Published 2026-02-26.

How severe is CVE-2026-27838?

Low severity. CVSS v3 base score is 3.1 out of 10.

Auth bypass in Wger-project Wger

CVE-2026-27838

wger is a free, open-source workout and fitness manager. Five routine detail action endpoints check a cache before calling `self.get_object()`. In versions up to and including 2.4, ache keys are scoped only by `pk` — no user ID is included…

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.000 (11.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Wger-project Wger — versions <= 2.4

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

https://github.com/wger-project/wger/security/advisories/GHSA-42cr-w2gr-m54q (x_refsource_CONFIRM)
https://github.com/wger-project/wger/commit/e964328784e2ee2830a1991d69fadbce86ac9fbf (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-27838?: CVE-2026-27838 is a low-severity vulnerability in Wger-project Wger, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 3.1/10. Published 2026-02-26.
How severe is CVE-2026-27838?: Low severity. CVSS v3 base score is 3.1 out of 10.