What is CVE-2026-43977?

CVE-2026-43977 is a high-severity vulnerability in Wger-project Wger, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2026-07-16.

How severe is CVE-2026-43977?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Wger-project Wger

CVE-2026-43977

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/ ac…

Vulnerability class: IDOR (Insecure Direct Object Reference)

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Wger-project Wger — versions < 2.6

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key
CWE-863 — Incorrect Authorization

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-43977?: CVE-2026-43977 is a high-severity vulnerability in Wger-project Wger, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2026-07-16.
How severe is CVE-2026-43977?: High severity. CVSS v3 base score is 7.5 out of 10.