CVE-2026-43977: high-severity vulnerability in wger-project wger
wger IDOR: Authenticated Users Can Read Others' Private Workout Session Data via Template Routine API
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.3%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
wger-project · wgerRelated CVEs — wger-project wger
In the same product, most dangerous first.
CVE-2026-86255HIGHwger before 2.5 Uncontrolled Resource Consumption via date_sequenceEPSS 0.4%CVE-2026-43948CRITICALwger: cross-tenant password reset and plaintext disclosure via gym=None bypassEPSS 0.4%CVE-2026-86254MEDIUMwger Incomplete Authorization Fix Cross-Tenant Account DeletionEPSS 0.4%CVE-2026-40474HIGHwger has Broken Access Control in the Global Gym Configuration Update EndpointEPSS 0.3%CVE-2026-27839MEDIUMwger: IDOR in nutritional_values endpoints exposes private dietary data via direct ORM lookupEPSS 0.3%CVE-2026-27835MEDIUMwger: IDOR in RepetitionsConfig and MaxRepetitionsConfig API leak other users' workout dataEPSS 0.3%