High [CVE-2026-58436] Denial of Service via ParseAcceptLanguage and Locale middleware on unauthenticated requests
This high-severity Red Hat Linux advisory covers CVE-2026-58436 affecting OpenShift Pipelines.
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Summary
ParseAcceptLanguage quadratic-time DoS via Locale middleware on unauthenticated requests A flaw was found in Gitea. This vulnerability allows an attacker to send specially crafted requests, leading to excessive resource consumption and a Denial of Service (DoS) condition, making the service unavailable to legitimate users.
This is an Important denial of service vulnerability in Gitea. An unauthenticated remote attacker can exploit a quadratic-time algorithm in the ParseAcceptLanguage function, leading to excessive resource consumption and service unavailability.
Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-1333.
Affected Red Hat products: OpenShift Pipelines. Red Hat does not currently list a fixing RHSA for this CVE.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 51 minutes ago·verify at source
- 1.27.0
Official advisory · high-confidence parse· fetched 51 minutes ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Official advisory · high-confidence parse· fetched 51 minutes ago·verify at source
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