CVE-2026-27835 json
wger: IDOR in RepetitionsConfig and MaxRepetitionsConfig API leak other users' workout data
published 2026-02-26 8 mo ago modified 2026-07-13 3 mo ago also GHSA-xf68-8hjw-7mpm , PYSEC-2026-3423 , EUVD-2026-8898
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 22%
- public exploits
- 0
- none known
Summary
wger is a free, open-source workout and fitness manager. In versions up to and including 2.4, `RepetitionsConfigViewSet` and `MaxRepetitionsConfigViewSet` return all users' repetition config data because their `get_queryset()` calls `.all()` instead of filtering by the authenticated user. Any registered user can enumerate every other user's workout structure. Commit 1fda5690b35706bb137850c8a084ec6a13317b64 contains a fix for the issue.
Patch / fix
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 8 mo ago
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/wger-project/wger/security/advisories/GHSA-xf68-8hjw-7mpm referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| OSV | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| GitHub | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | wger | <=2.1 |
no fix listed |
Affected products
- wger-project wger
Classification
- Weakness
-
- CWE-639 Authorization Bypass Through User-Controlled Key
References
-
github.com
/wger-project/wger/commit/1fda5690b35706bb137850c8a084ec6a13317b64
web, patch
-
github.com
/wger-project/wger/security/advisories/GHSA-xf68-8hjw-7mpm
web, exploit, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-27835
advisory
-
github.com
/wger-project/wger
package
-
pypi.org
/project/wger
package
-
github.com
/advisories/GHSA-xf68-8hjw-7mpm
advisory
Sources
- CVE List CVE-2026-27835
- GitHub Advisory GHSA-xf68-8hjw-7mpm
- NVD CVE-2026-27835
- OSV PYSEC-2026-3423
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.