Drupal up to 11.1.x/11.3.13/11.4.3 cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.1$0-$5k0.63

Summaryinfo

A vulnerability described as problematic has been identified in Drupal up to 11.1.x/11.3.13/11.4.3. This affects an unknown function. Such manipulation leads to cross site scripting. This vulnerability is traded as CVE-2026-15917. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Drupal up to 11.1.x/11.3.13/11.4.3. It has been rated as problematic. Affected by this issue is an unknown code block. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity. CVE summarizes:

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

The advisory is available at drupal.org. This vulnerability is handled as CVE-2026-15917 since 07/15/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. 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 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: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
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 11.2.x/11.3.14/11.4.4

Timelineinfo

07/15/2026 CVE reserved
08/25/2026 +41 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-2026-15917 (🔒)
GCVE (CVE): GCVE-0-2026-15917
GCVE (VulDB): GCVE-100-395414

Entryinfo

Created: 08/26/2026 00:52
Changes: 08/26/2026 00:52 (53)
Complete: 🔍
Cache ID: 216::103

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