What is CVE-2026-58436?

CVE-2026-58436 is a high-severity vulnerability in Gitea Open Source Git Server, classified under Inefficient Algorithmic Complexity. CVSS score: 7.5/10. Published 2026-08-13.

How severe is CVE-2026-58436?

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

Vulnerability in Gitea Open Source Git Server

CVE-2026-58436

ParseAcceptLanguage quadratic-time DoS via Locale middleware on unauthenticated requests

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

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:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (47.0th percentile), scored 2026-09-27.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.006 · change: +0.003

Affected products

Gitea Open Source Git Server — versions 0

Weakness classification (CWE)

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-2026-58436?: CVE-2026-58436 is a high-severity vulnerability in Gitea Open Source Git Server, classified under Inefficient Algorithmic Complexity. CVSS score: 7.5/10. Published 2026-08-13.
How severe is CVE-2026-58436?: High severity. CVSS v3 base score is 7.5 out of 10.