DRUPAL-CORE-2026-009
The advisory, in context
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.
Affected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
Earlier releases before 10.5.12
Fixed in 10.5.12
From 10.6.0 before 10.6.11
Fixed in 10.6.11
From 11.2.0 before 11.2.14
Fixed in 11.2.14
From 11.3.0 before 11.3.12
Fixed in 11.3.12
From 11.0.0 before 11.1.0
Fixed in 11.1.0
From 11.1.0 before 11.2.0
Fixed in 11.2.0
477 explicitly affected versions
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
View affected-version evidence
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]
}