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CVE-2026-49329

7.5 high SSVC exploitation: none Published
NVD · CVE.org

A flaw was found in openshift/oauth-server. The OAuth login and error page endpoints pass the unauthenticated Accept-Language header to golang.org/x/text/language.ParseAcceptLanguage() without input validation. A bypass of the CVE-2022-32149 mitigation exists: the upstream guard counts only '-' characters but the internal BCP 47 scanner aliases '_' to '-' after the guard check. An unauthenticated attacker can send a crafted Accept-Language header using '_' separators to trigger quadratic-time parsing, consuming excessive CPU and denying authentication to all cluster users.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 3

  1. StatusAwaiting Analysis → PublishedNVD modified 2026-10-23 05:08
  2. References+2 references (now 9)NVD modified 2026-10-23 06:17
  3. First seenCVSS 7.5NVD modified 2026-10-15 20:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 9