REDAXO: Missing CSRF Protection on Package Update Action Allows Forced Addon Updates (CVE-2026-63000) | HOL Guard CVE

Medium · CVSS 6.4CVE-2026-63000GHSA-M8R3-22V6-G877

REDAXO: Missing CSRF Protection on Package Update Action Allows Forced Addon Updates

Answer in brief

CVE-2026-63000 records a Medium severity (CVSS 6.4) vulnerability in REDAXO: Missing CSRF Protection on Package Update Action Allows Forced Addon Updates. The current sources do not mark it as known exploited. The current feed maps redaxo/source (composer), redaxo/core (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 23, 2026Updated Sep 23, 2026Source checked Sep 23, 2026First seen by HOL Sep 23, 2026Material review Sep 23, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.4
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 6.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps redaxo/source (composer), redaxo/core (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
redaxo/sourcecomposer	<=5.21.1	5.21.2
redaxo/coregeneric	<5.21.2	5.21.2

Recommended response

Check inventory. Check lockfiles and deployed manifests for redaxo/source, redaxo/core.
Review the reported fix. Update redaxo/source to 5.21.2; redaxo/core to 5.21.2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 23, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 23, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 23, 2026

Sources and claim methodology

Upstream source description

REDAXO is a PHP-based content management system. Prior to 5.21.2, rex_api_install_package_update in redaxo/src/addons/install/lib/api/api_package_update.php inherits the false default from rex_api_function::requiresCsrfProtection() instead of requiring a CSRF token. An unauthenticated attacker can cause a logged-in administrator's browser to request a selected package update from the configured REDAXO package server, changing installed addon code or disrupting the site without the administrator's intent. This issue is fixed in version 5.21.2.

Quoted source text, attributed separately from HOL analysis.