anonhaven

CVE-2026-58436

HIGH CVSS 3.1: 7.5 EPSS 0.34%
Updated Aug 14, 2026
ParseAcceptLanguage
Parameter Value
CVSS 7.5 (HIGH)
Type CWE-1333 (Inefficient Regular Expression Complexity / ReDoS), CWE-407
Vendor ParseAcceptLanguage
Public PoC No

ParseAcceptLanguage quadratic-time DoS via Locale middleware on unauthenticated requests

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

CWE-1333 Inefficient Regular Expression Complexity / ReDoS
CWE-407

References 3

https://blog.gitea.com/gitea-1.27.0-is-released/
88ee5874-cf24-4952-aea0-31affedb7ff2
https://github.com/go-gitea/gitea/releases/tag/v1.27.0
88ee5874-cf24-4952-aea0-31affedb7ff2
https://github.com/go-gitea/gitea/security/advisories/GHSA-fw57-jgch-pgf3
88ee5874-cf24-4952-aea0-31affedb7ff2
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