CVE-2026-121555

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    CVE-2026-121555

    Published: 3 Nov 2026Last Modified: 5 Nov 2026

    Summary: Foxel through 2.4.0 Unauthenticated File Read via /api/fs/stream and /api/fs/thumb

    Details: Foxel through 2.4.0 contains a missing authentication vulnerability that allows unauthenticated attackers to read files by requesting the /api/fs/stream and /api/fs/thumb endpoints. Attackers can supply a VFS mount prefix and relative path to retrieve full file contents or thumbnails across all mounts, bypassing PathRule permission grants.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/121xxx/CVE-2026-121555.json, https://nvd.nist.gov/vuln/detail/CVE-2026-121555, https://www.vulncheck.com/advisories/foxel-through-2.4.0-unauthenticated-file-read-via-api-fs-stream-and-api-fs-thumb, https://github.com/DrizzleTime/Foxel/issues/152, https://github.com/DrizzleTime/Foxel/commit/73d9fa825e1004d37abb7b10faea0cd7f5bcb463, https://github.com/DrizzleTime/Foxel, https://github.com/DrizzleTime/Foxel/blob/v2.4.0/api/routers.py#L31, https://github.com/DrizzleTime/Foxel/blob/v2.4.0/domain/virtual_fs/api.py#L164-L182

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -73d9fa825e1004d37abb7b10faea0cd7f5bcb463

    Affected versions

    v2.4.0

    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-2026-121555 | CVE-DB