What is CVE-2026-20779?

CVE-2026-20779 is a high-severity vulnerability in Gitea Open Source Git Server, classified under Authentication Bypass by Capture-replay. CVSS score: 7.1/10. Published 2026-07-03.

How severe is CVE-2026-20779?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Gitea Open Source Git Server

CVE-2026-20779

Gitea versions from 1.5.0 before 1.26.3 have a TOTP single-use enforcement defect that allows a valid TOTP code to be accepted more than once across web two-factor authentication flows and the Basic Auth X-Gitea-OTP path.

Published 2026-07-03 · last modified 2026-07-07.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (39.5th percentile), scored 2026-10-08.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Gitea Open Source Git Server — versions 1.5.0

Weakness classification (CWE)

CWE-294 — Authentication Bypass by Capture-replay

References

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

Frequently asked questions

What is CVE-2026-20779?: CVE-2026-20779 is a high-severity vulnerability in Gitea Open Source Git Server, classified under Authentication Bypass by Capture-replay. CVSS score: 7.1/10. Published 2026-07-03.
How severe is CVE-2026-20779?: High severity. CVSS v3 base score is 7.1 out of 10.