CVE-2026-63197

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    CVE-2026-63197

    Published: 3 Nov 2026Last Modified: 5 Nov 2026

    Summary: traQ: XSS in the User Uploaded File Retrieval API

    Details: traQ is a messenger application built for Digital Creators Club traP. Prior to 3.28.3, instances configured with TRAQ_STORAGE_TYPE=local can return user-uploaded SVG or HTML content from the /files/{fileId} retrieval endpoint for direct browser rendering. An attacker with file-upload capability can provide crafted active content and induce another user to open its file URL, causing attacker-controlled JavaScript to execute in the victim's browser. This issue is fixed in version 3.28.3.

    References: https://github.com/traPtitech/traQ/releases/tag/v3.28.3, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63197.json, https://github.com/traPtitech/traQ/security/advisories/GHSA-p74g-f95m-7fx7, https://nvd.nist.gov/vuln/detail/CVE-2026-63197, https://github.com/traPtitech/traQ/commit/3db29e7771661f6418d88d186d8ff7817f5d6b6e

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -e3510c22dc2f94773a9f92c5b0fd0c8e1bbfb59f

    Affected versions

    v3.28.2
    v3.28.1
    v3.28.0

    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-2026-63197 | CVE-DB