Vulnerability advisory

DRUPAL-CORE-2026-009

Published Jun 17, 2026Updated Sep 10, 2026OSV record ↗

Also known as BIT-drupal-2026-55808CVE-2026-55808

Severity

Severity not reported.

Affected versions

drupal/core Packagist

Affected	Fixed in
All versions before 10.5.12	`10.5.12`Advisories →
`10.6.0` to before 10.6.11	`10.6.11`Advisories →
`11.2.0` to before 11.2.14	`11.2.14`Advisories →
`11.3.0` to before 11.3.12	`11.3.12`Advisories →
`11.0.0` to before 11.1.0	`11.1.0`Advisories →
`11.1.0` to before 11.2.0	`11.2.0`Advisories →
Also listed as affected (477) `10.0.0` `10.0.0-alpha1` `10.0.0-alpha2` `10.0.0-alpha3` `10.0.0-alpha4` `10.0.0-alpha5` `10.0.0-alpha6` `10.0.0-alpha7` `10.0.0-beta1` `10.0.0-beta2` `10.0.0-rc1` `10.0.0-rc2` `10.0.0-rc3` `10.0.1` `10.0.10` `10.0.11` `10.0.2` `10.0.3` `10.0.4` `10.0.5` `10.0.6` `10.0.7` `10.0.8` `10.0.9` `10.1.0` `10.1.0-alpha1` `10.1.0-beta1` `10.1.0-rc1` `10.1.1` `10.1.2` `10.1.3` `10.1.4` `10.1.5` `10.1.6` `10.1.7` `10.1.8` `10.2.0` `10.2.0-alpha1` `10.2.0-beta1` `10.2.0-rc1` `10.2.1` `10.2.10` `10.2.11` `10.2.12` `10.2.2` `10.2.3` `10.2.4` `10.2.5` `10.2.6` `10.2.7` `10.2.8` `10.2.9` `10.3.0` `10.3.0-beta1` `10.3.0-rc1` `10.3.1` `10.3.10` `10.3.11` `10.3.12` `10.3.13` `10.3.14` `10.3.2` `10.3.3` `10.3.4` `10.3.5` `10.3.6` `10.3.7` `10.3.8` `10.3.9` `10.4.0` `10.4.0-beta1` `10.4.0-rc1` `10.4.1` `10.4.10` `10.4.2` `10.4.3` `10.4.4` `10.4.5` `10.4.6` `10.4.7` `10.4.8` `10.4.9` `10.5.0` `10.5.0-beta1` `10.5.0-rc1` `10.5.1` `10.5.10` `10.5.11` `10.5.2` `10.5.3` `10.5.4` `10.5.5` `10.5.6` `10.5.7` `10.5.8` `10.5.9` `10.6.0` `10.6.1` `10.6.10` `10.6.2` `10.6.3` `10.6.4` `10.6.5` `10.6.6` `10.6.7` `10.6.8` `10.6.9` `11.0.0` `11.0.1` `11.0.10` `11.0.11` `11.0.12` `11.0.13` `11.0.2` `11.0.3` `11.0.4` `11.0.5` `11.0.6` `11.0.7` `11.0.8` `11.0.9` `11.1.0` `11.1.0-beta1` `11.1.0-rc1` `11.1.1` `11.1.10` `11.1.2` `11.1.3` `11.1.4` `11.1.5` `11.1.6` `11.1.7` `11.1.8` `11.1.9` `11.2.0` `11.2.0-alpha1` `11.2.0-beta1` `11.2.0-rc1` `11.2.0-rc2` `11.2.1` `11.2.10` `11.2.11` `11.2.12` `11.2.13` `11.2.2` `11.2.3` `11.2.4` `11.2.5` `11.2.6` `11.2.7` `11.2.8` `11.2.9` `11.3.0` `11.3.1` `11.3.10` `11.3.11` `11.3.2` `11.3.3` `11.3.4` `11.3.5` `11.3.6` `11.3.7` `11.3.8` `11.3.9` `8.0.0` `8.0.0-beta10` `8.0.0-beta11` `8.0.0-beta12` `8.0.0-beta13` `8.0.0-beta14` `8.0.0-beta15` `8.0.0-beta16` `8.0.0-beta6` `8.0.0-beta7` `8.0.0-beta8` `8.0.0-beta9` `8.0.0-rc1` `8.0.0-rc2` `8.0.0-rc3` `8.0.0-rc4` `8.0.1` `8.0.2` `8.0.3` `8.0.4` `8.0.5` `8.0.6` `8.1.0` `8.1.0-beta1` `8.1.0-beta2` `8.1.0-rc1` `8.1.1` `8.1.10` `8.1.2` `8.1.3` `8.1.4` `8.1.5` `8.1.6` `8.1.7` `8.1.8` `8.1.9` `8.2.0` `8.2.0-beta1` `8.2.0-beta2` `8.2.0-beta3` `8.2.0-rc1` `8.2.0-rc2` `8.2.1` `8.2.2` `8.2.3` `8.2.4` `8.2.5` `8.2.6` `8.2.7` `8.2.8` `8.3.0` `8.3.0-alpha1` `8.3.0-beta1` `8.3.0-rc1` `8.3.0-rc2` `8.3.1` `8.3.2` `8.3.3` `8.3.4` `8.3.5` `8.3.6` `8.3.7` `8.3.8` `8.3.9` `8.4.0` `8.4.0-alpha1` `8.4.0-beta1` `8.4.0-rc1` `8.4.0-rc2` `8.4.1` `8.4.2` `8.4.3` `8.4.4` `8.4.5` `8.4.6` `8.4.7` `8.4.8` `8.5.0` `8.5.0-alpha1` `8.5.0-beta1` `8.5.0-rc1` `8.5.1` `8.5.10` `8.5.11` `8.5.12` `8.5.13` `8.5.14` `8.5.15` `8.5.2` `8.5.3` `8.5.4` `8.5.5` `8.5.6` `8.5.7` `8.5.8` `8.5.9` `8.6.0` `8.6.0-alpha1` `8.6.0-beta1` `8.6.0-beta2` `8.6.0-rc1` `8.6.1` `8.6.10` `8.6.11` `8.6.12` `8.6.13` `8.6.14` `8.6.15` `8.6.16` `8.6.17` `8.6.18` `8.6.2` `8.6.3` `8.6.4` `8.6.5` `8.6.6` `8.6.7` `8.6.8` `8.6.9` `8.7.0` `8.7.0-alpha1` `8.7.0-alpha2` `8.7.0-beta1` `8.7.0-beta2` `8.7.0-rc1` `8.7.1` `8.7.10` `8.7.11` `8.7.12` `8.7.13` `8.7.14` `8.7.2` `8.7.3` `8.7.4` `8.7.5` `8.7.6` `8.7.7` `8.7.8` `8.7.9` `8.8.0` `8.8.0-alpha1` `8.8.0-beta1` `8.8.0-rc1` `8.8.1` `8.8.10` `8.8.11` `8.8.12` `8.8.2` `8.8.3` `8.8.4` `8.8.5` `8.8.6` `8.8.7` `8.8.8` `8.8.9` `8.9.0` `8.9.0-beta1` `8.9.0-beta2` `8.9.0-beta3` `8.9.0-rc1` `8.9.1` `8.9.10` `8.9.11` `8.9.12` `8.9.13` `8.9.14` `8.9.15` `8.9.16` `8.9.17` `8.9.18` `8.9.19` `8.9.2` `8.9.20` `8.9.3` `8.9.4` `8.9.5` `8.9.6` `8.9.7` `8.9.8` `8.9.9` `9.0.0` `9.0.0-alpha1` `9.0.0-alpha2` `9.0.0-beta1` `9.0.0-beta2` `9.0.0-beta3` `9.0.0-rc1` `9.0.1` `9.0.10` `9.0.11` `9.0.12` `9.0.13` `9.0.14` `9.0.2` `9.0.3` `9.0.4` `9.0.5` `9.0.6` `9.0.7` `9.0.8` `9.0.9` `9.1.0` `9.1.0-alpha1` `9.1.0-beta1` `9.1.0-rc1` `9.1.0-rc2` `9.1.0-rc3` `9.1.1` `9.1.10` `9.1.11` `9.1.12` `9.1.13` `9.1.14` `9.1.15` `9.1.2` `9.1.3` `9.1.4` `9.1.5` `9.1.6` `9.1.7` `9.1.8` `9.1.9` `9.2.0` `9.2.0-alpha1` `9.2.0-beta1` `9.2.0-beta2` `9.2.0-beta3` `9.2.0-rc1` `9.2.1` `9.2.10` `9.2.11` `9.2.12` `9.2.13` `9.2.14` `9.2.15` `9.2.16` `9.2.17` `9.2.18` `9.2.19` `9.2.2` `9.2.20` `9.2.21` `9.2.3` `9.2.4` `9.2.5` `9.2.6` `9.2.7` `9.2.8` `9.2.9` `9.3.0` `9.3.0-alpha1` `9.3.0-beta1` `9.3.0-beta2` `9.3.0-beta3` `9.3.0-rc1` `9.3.1` `9.3.10` `9.3.11` `9.3.12` `9.3.13` `9.3.14` `9.3.15` `9.3.16` `9.3.17` `9.3.18` `9.3.19` `9.3.2` `9.3.20` `9.3.21` `9.3.22` `9.3.3` `9.3.4` `9.3.5` `9.3.6` `9.3.7` `9.3.8` `9.3.9` `9.4.0` `9.4.0-alpha1` `9.4.0-beta1` `9.4.0-rc1` `9.4.0-rc2` `9.4.1` `9.4.10` `9.4.11` `9.4.12` `9.4.13` `9.4.14` `9.4.15` `9.4.2` `9.4.3` `9.4.4` `9.4.5` `9.4.6` `9.4.7` `9.4.8` `9.4.9` `9.5.0` `9.5.0-beta1` `9.5.0-beta2` `9.5.0-rc1` `9.5.0-rc2` `9.5.1` `9.5.10` `9.5.11` `9.5.2` `9.5.3` `9.5.4` `9.5.5` `9.5.6` `9.5.7` `9.5.8` `9.5.9`

Description

The JSON:API and REST modules allow you to upload image files to image fields.

The validation rules check the file extension of the uploaded file but not the file MIME type. This may allow a malicious user to upload a file that is not an image.

Certain web-server configurations may serve the uploaded file with its actual MIME type rather than an image type. This may lead to cross-site scripting (XSS) or other unexpected behavior.

References

Webwww.drupal.org/sa-core-2026-009 ↗