CVE-2026-63000: redaxo core · Cross-Site Request Forgery (CSRF)
Affects redaxo coreSource CVE Database V5
Not known to be exploited · CVSS 6.4 Medium : upgrade to 5.21.2 when convenient.
Data as of 6 Nov 2026, 23:24 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.21.2
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:LExploitation evidence
Disclosed: evidence found.
CVE published 23 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.
What to do
Upgrade core and redaxo/core to 5.21.2.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| redaxocore | Affected
| Fixed in
|
GitHubredaxo/corepkg:github/redaxo/coreOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade REDAXO core to version 5.21.2 or later, where the CSRF protection requirement for the rex_api_install_package_update function is properly enforced. No other mitigation is indicated as the fix is official and available.
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.