HIGH 8.7 NVD

CVE-2026-90668

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

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).

References

https://forums.unrealircd.org/viewtopic.php?t=9483
https://www.unrealircd.org/

Published: 2026-09-13 · Source: NVD · Feed updated: 2026-09-13

This high severity vulnerability with a CVSS score of 8.7 was published on 2026-09-13 via NVD.

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