CVE-2026-119760

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    CVE-2026-119760

    Published: 30 Oct 2026Last Modified: 6 Nov 2026

    Summary: sniproxy through 0.7.0 NULL Pointer Dereference via resolv_cancel()

    Details: sniproxy through 0.7.0 contains a NULL pointer dereference vulnerability in resolv_cancel() that allows remote unauthenticated attackers to crash the daemon by sending overlong hostnames. Attackers can send a 254 or 255 character TLS SNI name or HTTP Host header matching a wildcard backend, then close the connection to terminate the proxy.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/119xxx/CVE-2026-119760.json, https://nvd.nist.gov/vuln/detail/CVE-2026-119760, https://www.vulncheck.com/advisories/sniproxy-through-0.7.0-null-pointer-dereference-via-resolv-cancel, https://github.com/dlundquist/sniproxy/issues/411, https://github.com/renaudallard/sniproxy/commit/17986ba7397297313331297cac3b9eb3f0ba96b7, https://github.com/renaudallard/sniproxy/commit/d5d78290c8fe15d9aa12185d2c57739b7b0c6a6b, https://github.com/dlundquist/sniproxy, https://github.com/dlundquist/sniproxy/blob/1cc625ea41796695a54593d1bd779366b82b8b4e/src/connection.c#L737-L738, https://github.com/dlundquist/sniproxy/blob/1cc625ea41796695a54593d1bd779366b82b8b4e/src/resolv.c#L219-L224

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    0.7.0
    0.7.6
    0.7.5
    0.7.4
    0.7.3
    0.7.2
    0.7.1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-119760 | CVE-DB