What is CVE-2026-55982?

CVE-2026-55982 is a critical-severity vulnerability in Gitea Open Source Git Server, classified under Information Disclosure. CVSS score: 9.1/10. Published 2026-08-13.

How severe is CVE-2026-55982?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Information disclosure in Gitea Open Source Git Server

CVE-2026-55982

OIDC userinfo Endpoint Returns Identity Claims Without Enforcing API Token Scopes

Vulnerability class: Information Disclosure

Published 2026-08-13 · last modified 2026-08-26.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.005 (40.7th percentile), scored 2026-09-27.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001

Affected products

Gitea Open Source Git Server — versions 1.26.2

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

88ee5874-cf24-4952-aea0-31affedb7ff2 (vendor-advisory)
88ee5874-cf24-4952-aea0-31affedb7ff2 (release-notes)
88ee5874-cf24-4952-aea0-31affedb7ff2 (release-notes)

Frequently asked questions

What is CVE-2026-55982?: CVE-2026-55982 is a critical-severity vulnerability in Gitea Open Source Git Server, classified under Information Disclosure. CVSS score: 9.1/10. Published 2026-08-13.
How severe is CVE-2026-55982?: Critical severity. CVSS v3 base score is 9.1 out of 10.