CLEANSTART-2024-JN91743

    Dashboard / Vulnerabilities / CLEANSTART-2024-JN91743

    CLEANSTART-2024-JN91743

    Published: 31 Oct 2026Last Modified: 31 Oct 2026
    Upstream:
    CVE-2021-38507

    Summary: Opportunistic Encryption feature of HTTP2 (RFC 8164) allows a connection to be transparently upgraded to TLS while retaining the visual properties of an HTTP connection, including being same-origin...

    Details: CVE-2021-38507 affects multiple packages. The Opportunistic Encryption feature of HTTP2 (RFC 8164) allows a connection to be transparently upgraded to TLS while retaining the visual properties of an HTTP connection, including being same-origin with unencrypted connections on port 80. See references for individual vulnerability details.

    References: https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2024/CLEANSTART-2024-JN91743.json, https://osv.dev/vulnerability/CVE-2021-38507, https://nvd.nist.gov/vuln/detail/CVE-2021-38507

    Affected packages

    Package

    Name: thunderbird

    Purl: pkg:apk/cleanstart/thunderbird

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -91.3.2-r0

    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-2024-JN91743 | CVE-DB