Affected versions: < 3.30.0
Full advisory: nvd.nist.gov
CVE-2026-66914
SEBLOD (com_cck) below 3.30.0 - Unauthenticated Path Traversal Arbitrary File Download
SEBLOD versions 1.0.0 to 3.29.0 (the Joomla 3 branch) contain an unauthenticated path traversal flaw (CWE-22). No login, no token and no permissions are required: an attacker can request arbitrary paths and download files from inside AND outside the web root, including configuration.php with your database credentials, and site backups or logs sitting above the document root. CVSS 4.0 base score 9.2 (Critical), reported by Krzysztof Zajac of CERT PL and published by the Joomla CNA on 7 August 2026. Update SEBLOD to 3.30.0 or later. There is no vendor-published workaround; if you cannot update immediately, block com_cck at the WAF for guest traffic and treat the database password, any API keys in configuration.php and any credentials stored in files above the web root as disclosed - rotate them.
Affected versions: < 3.30.0
Official record: cve.org · NVD
Every connected Joomla site is checked against these rules on each audit, and flagged if it runs an affected version.
Affected extensions and versions
SEBLOD - SEBLOD (com_cck) 4.0.0 to 4.6.0 - Unauthenticated Path Traversal Arbitrary File Download
SEBLOD versions 4.0.0 to 4.6.0 (the Joomla 4/5 branch) contain an unauthenticated path traversal flaw (CWE-22). No login, no token and no permissions are required: an attacker can request arbitrary paths and download files from inside AND outside the web root, including configuration.php with your database credentials, and site backups or logs sitting above the document root. CVSS 4.0 base score 9.2 (Critical), reported by Krzysztof Zajac of CERT PL and published by the Joomla CNA on 7 August 2026. Update SEBLOD to 4.7.0 or later. There is no vendor-published workaround; if you cannot update immediately, block com_cck at the WAF for guest traffic and treat the database password, any API keys in configuration.php and any credentials stored in files above the web root as disclosed - rotate them.
Affected versions: ≥ 4.0.0 and < 4.7.0
Full advisory: nvd.nist.gov
SEBLOD - SEBLOD (com_cck) 5.0.0 to 6.0.0 - Unauthenticated Path Traversal Arbitrary File Download
SEBLOD versions 5.0.0 to 6.0.0 (the Joomla 6 branch) contain an unauthenticated path traversal flaw (CWE-22). No login, no token and no permissions are required: an attacker can request arbitrary paths and download files from inside AND outside the web root, including configuration.php with your database credentials, and site backups or logs sitting above the document root. CVSS 4.0 base score 9.2 (Critical), reported by Krzysztof Zajac of CERT PL and published by the Joomla CNA on 7 August 2026. Update SEBLOD to 6.0.1 or later. There is no vendor-published workaround; if you cannot update immediately, block com_cck at the WAF for guest traffic and treat the database password, any API keys in configuration.php and any credentials stored in files above the web root as disclosed - rotate them.
Affected versions: ≥ 5.0.0 and < 6.0.1
Full advisory: nvd.nist.gov
Running an affected version on a site you manage?
A free audit tells you which of your Joomla and WordPress sites run an affected version, which are out of date, and which have not been backed up. No card required. If a site is already compromised, fix.mysites.guru is a single fixed fee per incident, usually resolved the same day.
Rules current as of 13 September 2026.