CVE-2026-43977 Details
Description
wger is a free, open-source workout and fitness manager. In versions prior to 2.6, any authenticated user can read another user's private workout session notes, exercise history, and training statistics by calling the /logs/ and /stats/ actions on a routine they do not own. The vulnerability exists in RoutineViewSet (wger/manager/api/views.py). The view defines two custom actions /logs/ and /stats/ that are intended to return data for the requesting user's own training history within a routine. However, the underlying permission check (RoutinePermission.has_object_permission) grants read access to any authenticated user when the routine has is_template=True, regardless of ownership. When the /logs/ or /stats/ actions are invoked against a routine the attacker does not own, they return the owner's private workout history, not the attacker's. This issue has been fixed in version 2.6.
An insecure direct object reference (IDOR) vulnerability has been identified in wger, a workout and fitness management application, in versions prior to 2.6. This vulnerability allows any authenticated user to access another user's private workout session notes, exercise history, and training statistics. The issue arises in the RoutineViewSet, where the /logs/ and /stats/ actions mistakenly grant access to the owner's private data from routines marked as public templates, regardless of ownership. This exploitation can lead to unauthorized access to sensitive health-related information, violating privacy regulations such as GDPR.
Users can update to wger version 2.6 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 16, 2026CISA-ADP
Assessed Jul 17, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/wger-project/wger/security/advisories/GHSA-cj9g-27ph-4cgv | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/wger-project/wger/security/advisories/GHSA-cj9g-27ph-4cgv | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
| CWE-863 | Incorrect Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| wger | < 2.5 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 17, 2026 | CVE Modified | CISA-ADP |
| Jul 16, 2026 | New CVE Received | [email protected] |