CVE-2026-43978 | wger is a free, open-source workout and fitness manager. In … | CVSS 8.1 HIGH

Description

wger is a free, open-source workout and fitness manager. In versions prior to 2.6, a gym trainer can escalate their session to any higher-privileged account (gym manager, general manager) by chaining two calls to the trainer-login endpoint. Once a trainer performs a legitimate switch into a low-privileged user, the session flag trainer.identity is set and this flag alone bypasses the permission check on all subsequent trainer-login calls. This grants full gym administration capabilities including viewing all member data, modifying contracts, managing gym configuration, and accessing other trainers' and managers' personal information. This issue has been fixed in version 2.6.

Metadata

CVE ID: CVE-2026-43978
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-05-04 20:24 UTC
Published: 2026-07-16 22:11 UTC
Last updated: 2026-07-16 22:11 UTC
Primary CWE: CWE-269
CWE-269: Improper Privilege Management
Vendor / Product: wger-project / wger
Sources: cve.org · NVD

Severity & Metrics

8.1 HIGH CVSS 3.1

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

Affected products (1)

Vendor	Product	Platform	Versions
wger-project	wger	—	< 2.6

Weakness (CWE)

CWE	Source	Description
CWE-269	cna	CWE-269: Improper Privilege Management

CVSS scores (1)

Score	Severity	Version	Source	Vector
8.1	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

References (1)

https://github.com/wger-project/wger/security/advisories/GHSA-9qpr-vc49-hqg2 https://github.com/wger-project/wger/security/advisories/GHSA-9qpr-vc49-hqg2