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.
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
References
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