CVE-2026-58436: Inefficient regular expression (ReDoS) vulnerability

ParseAcceptLanguage quadratic-time DoS via Locale middleware on unauthenticated requests

7.5 CVSS 3.1 High EPSS 0.61% · top 52.9% CWE-407 · CWE-407CWE-1333 · Inefficient regular expression (ReDoS) Deferred

7.5CVSS 3.1 base score

0.61%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

4References

26 Aug 2026Last modified by NVD

Description

ParseAcceptLanguage quadratic-time DoS via Locale middleware on unauthenticated requests

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Link	Tags
https://blog.gitea.com/gitea-1.27.0-is-released/
https://github.com/go-gitea/gitea/releases/tag/v1.27.0
https://github.com/go-gitea/gitea/security/advisories/GHSA-fw57-jgch-pgf3
https://github.com/go-gitea/gitea/security/advisories/GHSA-fw57-jgch-pgf3

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Source: NIST National Vulnerability Database (record CVE-2026-58436), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.