CVE-2026-121819

    Dashboard / Vulnerabilities / CVE-2026-121819

    CVE-2026-121819

    Published: 6 Nov 2026Last Modified: 8 Nov 2026

    Summary:

    Details: A vulnerability has been identified in armeria-xds versions 1.40.0 through 1.42.0, where DataSourcePolicy checks filename containment without resolving symbolic links, allowing a compromised or semi-trusted xDS control plane to cause the xDS client to read files outside configured allowed root directories when a symbolic link inside an allowed directory points outside it. In deployments using a credential injector, header-compatible text secrets may be exposed to an attacker-observable upstream.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/121xxx/CVE-2026-121819.json, https://github.com/line/armeria/security/advisories/GHSA-m64h-m6r5-6jrx, https://line.github.io/security-advisory-blog/CVE-2026-121819/, https://nvd.nist.gov/vuln/detail/CVE-2026-121819

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- d6aeeb0733d99ddf3034d52c81a0d9ff8909b975
    Fixed -137a79a287e1a34691d55e2135053ed6ec6f527a

    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
    CVE-2026-121819 | CVE-DB