CVE-2026-27835: wger: IDOR in RepetitionsConfig and MaxRepetitionsConfig API leak other users' workout data

February 26, 2026 (updated April 15, 2026)

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.

References

github.com/advisories/GHSA-xf68-8hjw-7mpm
github.com/wger-project/wger
github.com/wger-project/wger/commit/1fda5690b35706bb137850c8a084ec6a13317b64
github.com/wger-project/wger/security/advisories/GHSA-xf68-8hjw-7mpm
nvd.nist.gov/vuln/detail/CVE-2026-27835

Code Behaviors & Features

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