HIGH

CVE-2026-90668

2026-09-13 CVSS v3.1

CVSS

7.5

Description

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).

Weakness (CWE)

CWE-770 Resource Allocation Without Limits

EPSS Score

0.33%

Probability of exploitation in next 30 days

26.6th percentile

References

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

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Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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