Drupal up to 11.4.3 cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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3.4$0-$5k0.32

Summaryinfo

A vulnerability was found in Drupal up to 11.4.3. It has been declared as problematic. Impacted is an unknown function. Executing a manipulation can lead to cross site scripting. This vulnerability is tracked as CVE-2026-55805. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Drupal up to 11.4.3. It has been declared as problematic. This vulnerability affects some unknown processing. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Drupal core allows Stored XSS. This issue affects Drupal core versions: from 0.0.0 to 10.6.13, from 11.3.0 to 11.3.14, from 11.4.0 to 11.4.4, from 0.0.0 to 11.0.*, from 0.0.0 to 11.1.*, from 0.0.0 to 11.2.*.

The advisory is available at drupal.org. This vulnerability was named CVE-2026-55805 since 06/17/2026. The exploitation appears to be easy. The attack can be initiated remotely. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading to version 10.6.13, 11.0.x, 11.1.x, 11.2.x, 11.3.14 or 11.4.4 eliminates this vulnerability.

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Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Drupal 10.6.13/11.0.x/11.1.x/11.2.x/11.3.14/11.4.4

Timelineinfo

06/17/2026 CVE reserved
08/25/2026 +69 days VulDB entry created
08/26/2026 +0 days Advisory disclosed
08/26/2026 +0 days VulDB entry last update

Sourcesinfo

Product: drupal.org

Advisory: drupal.org
Status: Confirmed

CVE: CVE-2026-55805 (🔒)
GCVE (CVE): GCVE-0-2026-55805
GCVE (VulDB): GCVE-100-395422

Entryinfo

Created: 08/26/2026 00:56
Changes: 08/26/2026 00:56 (53)
Complete: 🔍
Cache ID: 216::103

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