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    2 vulnerabilities found for UnrealIRCd by UnrealIRCd

    CVE-2026-114713 (GCVE-0-2026-114713)

    Vulnerability from cvelistv5 – Published: 2026-11-08 02:31 – Updated: 2026-11-08 11:04
    VLAI
    Summary
    The labeled-response module in UnrealIRCd 6.0.0 before 6.2.7.1 does not escape the IRCv3 "label" message tag when echoing it into replies, which allows any user on a network with two or more linked servers to inject server-to-server commands that are executed with server authority.
    Severity
    8.6 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
    CWE
    • CWE-140 - Improper Neutralization of Delimiters
    Assigner
    mitre CNA
    References
    Impacted products
    Vendor Product Version
    UnrealIRCd UnrealIRCd Affected: 0 , < 6.2.7.1 (custom)
        cpe:2.3:a:unrealircd:unrealircd:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-90668 (GCVE-0-2026-90668)

    Vulnerability from cvelistv5 – Published: 2026-09-13 02:00 – Updated: 2026-09-14 18:13
    VLAI
    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).
    Severity
    8.7 (High)
    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
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-14 18:13 UTC
    CWE
    • CWE-770 - Allocation of Resources Without Limits or Throttling
    Assigner
    mitre CNA
    References
    Impacted products
    Vendor Product Version
    UnrealIRCd UnrealIRCd Affected: 6.0.5 , < 6.2.7 (semver)
        cpe:2.3:a:unrealircd:unrealircd:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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