Drupal up to 11.3.11 Core server-side request forgery

Summaryinfo

A vulnerability, which was classified as problematic, was found in Drupal up to 11.3.11. Affected by this issue is some unknown functionality of the component Core. Such manipulation leads to server-side request forgery. This vulnerability is listed as CVE-2026-55807. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Drupal up to 11.3.11 and classified as problematic. Affected by this issue is some unknown functionality of the component Core. The manipulation with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Impacted is confidentiality. CVE summarizes:

Server-Side Request Forgery (SSRF) vulnerability in Drupal Drupal core allows Server Side Request Forgery. This issue affects Drupal core versions: from 0.0.0 to 10.5.12, from 10.6.0 to 10.6.11, from 11.2.0 to 11.2.14, from 11.3.0 to 11.3.12, from 0.0.0 to 11.0.*, from 0.0.0 to 11.1.*.

The advisory is shared for download at drupal.org. This vulnerability is handled as CVE-2026-55807 since 06/17/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 10.5.12, 10.6.11, 11.0.x, 11.1.x, 11.2.14 or 11.3.12 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Content Management System

Name

• Drupal

Version

• 10.5.0
• 10.5.1
• 10.5.2
• 10.5.3
• 10.5.4
• 10.5.5
• 10.5.6
• 10.5.7
• 10.5.8
• 10.5.9
• 10.5.10
• 10.5.11
• 10.6.0
• 10.6.1
• 10.6.2
• 10.6.3
• 10.6.4
• 10.6.5
• 10.6.6
• 10.6.7
• 10.6.8
• 10.6.9
• 10.6.10
• 11.0
• 11.1
• 11.2.0
• 11.2.1
• 11.2.2
• 11.2.3
• 11.2.4
• 11.2.5
• 11.2.6
• 11.2.7
• 11.2.8
• 11.2.9
• 11.2.10
• 11.2.11
• 11.2.12
• 11.2.13
• 11.3.0
• 11.3.1
• 11.3.2
• 11.3.3
• 11.3.4
• 11.3.5
• 11.3.6
• 11.3.7
• 11.3.8
• 11.3.9
• 11.3.10
• 11.3.11

License

• open-source

Website

• Product: https://www.drupal.org/

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