CLEANSTART-2026-UL12204

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    CLEANSTART-2026-UL12204

    Published: 31 Oct 2026Last Modified: 31 Oct 2026
    Upstream:
    CVE-2026-97031

    Summary: Multiple ECH outer extension references are not permitted under RFC 9849; previously, a client could send a well-crafted packet that could trigger memory exhaustion in the server process by specify...

    Details: CVE-2026-97031 affects multiple packages. Multiple ECH outer extension references are not permitted under RFC 9849; previously, a client could send a well-crafted packet that could trigger memory exhaustion in the server process by specifying multiple references. See references for individual vulnerability details.

    References: https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-UL12204.json, https://osv.dev/vulnerability/CVE-2026-97031, https://nvd.nist.gov/vuln/detail/CVE-2026-97031

    Affected packages

    Package

    Name: caddy

    Purl: pkg:apk/cleanstart/caddy

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.11.6-r1

    Affected versions

    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
    CLEANSTART-2026-UL12204 | CVE-DB