CVE-2026-90668
8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/AU:Y/R:A/RE:L
Summary
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).
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| UnrealIRCd | UnrealIRCd | 6.0.5 < 6.2.7 | affected |
Weaknesses
- CWE-770: CWE-770 Allocation of Resources Without Limits or Throttling
Workarounds
Remove the websocket and rpc options from your listen blocks until the patch or upgrade is applied.
References
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