CVE-2026-43976

wger is a free, open-source workout and fitness manager. Prior to version 2.6, five gym management views in wger apply a flawed gym-scope guard (`gym_a != gym_b`) that silently passes when both operands are `None`. A trainer with `gym.gym_trainer` and `gym.add_adminusernote` permissions and no gym assignment (`gym=None`) can read private admin notes, uploaded documents, gym contracts, user configuration, and user permission data for **any other unaffiliated user** on the instance. The subsequent querysets filter only on the attacker-supplied `member_id` with no secondary gym-scoped validation, so all records are disclosed. Version 2.6 fixes the issue.

CVSS 3.1

7.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 12% of CVEs (scores of 2026-10-25)

CWE

CWE-863

Published

2026-10-07

Modified

2026-10-07

Record from

the NVD, synced 2026-10-19

Packages (OSV)

References

• https://github.com/wger-project/wger/releases/tag/2.6
• https://github.com/wger-project/wger/security/advisories/GHSA-c72h-82w6-rqfp
• https://github.com/wger-project/wger/security/advisories/GHSA-c72h-82w6-rqfp

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