CVE-2026-43978

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Source

https://cve.org/CVERecord?id=CVE-2026-43978

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43978.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-43978

Aliases

Published

2026-07-16T22:11:57.629Z

Modified

2026-07-19T03:31:02.168272655Z

Severity

8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator

Summary

wger: Privilege escalation via trainer-login session chaining allows gym trainers to impersonate gym managers

Details

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.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43978.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-269"
    ]
}

References

Affected packages

Git / github.com/wger-project/wger

Affected ranges

Type

GIT

Repo

https://github.com/wger-project/wger

Events

Introduced

Fixed

e1d70bcc38cd56ae4a254dca1713c404d069f319

Database specific

{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.6"
        }
    ]
}

Affected versions

1.*

1.0

1.0.1

1.0.2

1.0.3

1.1

1.2

1.3

1.4

1.5

1.7

1.8

1.9

2.*

2.0

2.3

2.4

2.5

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43978.json"