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.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-c72h-82w6-rqfp wger: cross-tenant admin notes/contracts leak via gym=None bypass (5 views)
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 07 Oct 2026 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Wger-project
Wger-project wger
Vendors & Products Wger-project
Wger-project wger

Wed, 07 Oct 2026 14:00:00 +0000

Type Values Removed Values Added
Description 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.
Title wger: cross-tenant admin notes/contracts leak via gym=None bypass (5 views)
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-07T13:33:11.008Z

Reserved: 2026-05-04T20:24:31.915Z

Link: CVE-2026-43976

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-07T14:17:09.887

Modified: 2026-10-07T14:46:03.387

Link: CVE-2026-43976

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-07T15:45:06Z

Weaknesses