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    CVE-2026-44696

    OpenProject is open-source, web-based project management software. Prior to 17.4.0, OpenProject's rich text (markdown) rendering pipeline uses Sanitize::Config::RELAXED[:css] for inline style sanitization. This configuration permits essentially all CSS properties in style attributes on permitted HTML elements (figure, img, table, th, tr, td). This allows any authenticated user with write access to formattable text fields (work package descriptions, comments, project descriptions, news) to inject CSS This vulnerability is fixed in 17.4.0.

    Published:Jun 26, 2026
    Last Modified:Jun 27, 2026
    EPS:Jun 26, 2026
    EPSS Score:
    CVSS Score:5.7

    Affected Products

    Vendor
    Opf
    Product
    Openproject

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-44733 (CVSS 5.9) — OpenProject is open-source, web-based project management software. Prior to 17.3.2 and 17.4.0, Business Logic …
    CVE-2026-44731 (CVSS 4.3) — OpenProject is open-source, web-based project management software. Prior to 17.3.2 and 17.4.0, the web applica…
    CVE-2026-44732 (CVSS 4.3) — OpenProject is open-source, web-based project management software. Prior to 17.3.2 and 17.4.0, OpenProject exp…
    CVE-2026-44734 (CVSS 6.5) — OpenProject is open-source, web-based project management software. Prior to 17.3.2 and 17.4.0, a Missing Autho…
    CVE-2026-44735 (CVSS 6.5) — OpenProject is open-source, web-based project management software. Prior to 17.3.2 and 17.4.0, the GET /api/v3…
    CVE-2026-49355 (CVSS 4.3) — OpenProject is open-source, web-based project management software. Prior to 17.4.0, `GET /api/v3/meetings/:mee…

    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