Bug 2532640 (CVE-2026-90668) - CVE-2026-90668 UnrealIRCd: UnrealIRCd: Denial of Service via unlimited HTTP request headers
Summary: CVE-2026-90668 UnrealIRCd: UnrealIRCd: Denial of Service via unlimited HTTP r...
Keywords:
Status: NEW
Alias: CVE-2026-90668
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2532934 2532935
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-13 02:21 UTC by OSIDB Bzimport
Modified: 2026-09-14 07:24 UTC (History)
0 users

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Description OSIDB Bzimport 2026-09-13 02:21:20 UTC 
The webserver in UnrealIRCd 6.0.5 through 6.2.6 before 6.2.7 does not limit the number of HTTP request headers, which allows remote attackers to cause a denial of service (memory consumption and unresponsive server) via an HTTP request with an unlimited number of headers, if a websocket or JSON-RPC listener is enabled (disabled by default).
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