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    CVE-2026-63002

    REDAXO is a PHP-based content management system. Prior to 5.21.2, redaxo/src/addons/mediapool/pages/sync.php inserts filenames held in $diffFiles from the media filesystem into the Mediapool Sync page without rex_escape(). An attacker who can place an unregistered file with HTML metacharacters in the media directory can execute script in the browser of a backend user with media[sync] permission when that user opens the Sync page, enabling session theft or unauthorized backend actions. This issue is fixed in version 5.21.2.

    Published:Sep 23, 2026
    Last Modified:Oct 19, 2026
    EPS:Sep 23, 2026
    EPSS Score:0.00183
    CVSS Score:4.8

    Affected Products

    Vendor
    Redaxo
    Product
    Core
    Vendor
    Redaxo
    Product
    Redaxo

    Exploits

    https://github.com/redaxo/core/security/advisories/GHSA-w998-qmw9-mf4mhttps://github.com/redaxo/core/security/advisories/GHSA-w998-qmw9-mf4m

    Related CVEs

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    CVE-2026-117536 (CVSS 8.6) — REDAXO before 5.21.3 contains a cross-site request forgery vulnerability in the backend user administration pa…
    CVE-2026-117535 (CVSS 5.1) — REDAXO before 5.21.3 contains a reflected cross-site scripting vulnerability in the backend media pool detail …
    CVE-2026-117534 (CVSS 5.1) — REDAXO before 5.21.3 contains a cross-site request forgery vulnerability in the structure/history plugin that …
    CVE-2026-117533 (CVSS 2.1) — REDAXO from 5.18.0 before 5.21.4 contains a stored cross-site scripting vulnerability because rex_media_servic…
    CVE-2026-117532 (CVSS 9.3) — REDAXO core from 5.3.0 before 5.21.4 contains an authentication bypass vulnerability in the structure/history …
    CVE-2026-116900 (CVSS 5.1) — REDAXO before 5.21.4 contains a stored cross-site scripting vulnerability that allows content editors to injec…
    CVE-2026-116899 (CVSS 7.1) — REDAXO before 5.21.4 contains a broken access control vulnerability that allows authenticated editors to modif…
    CVE-2026-116898 (CVSS 7.1) — REDAXO before 5.21.4 contains a missing authorization vulnerability in the media pool bulk move that checks on…

    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