GitLab up to 18.11.6/19.0.3/19.1.1 Input Sanitizer cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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3.4$0-$5k0.00+

Summaryinfo

A vulnerability classified as problematic was found in GitLab up to 18.11.6/19.0.3/19.1.1. The affected element is an unknown function of the component Input Sanitizer. Executing a manipulation can lead to cross site scripting. This vulnerability is registered as CVE-2026-13320. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as problematic was found in GitLab up to 18.11.6/19.0.3/19.1.1. This vulnerability affects an unknown function of the component Input Sanitizer. 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:

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.7 before 18.11.7, 19.0 before 19.0.4, and 19.1 before 19.1.2 that under certain conditions could have allowed an authenticated user to execute arbitrary scripts in another user's browser session due to improper sanitization of user-supplied input.

The advisory is shared for download at gitlab.com. This vulnerability was named CVE-2026-13320 since 06/25/2026. The exploitation appears to be easy. The attack can be initiated remotely. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 18.11.7, 19.0.4 or 19.1.2 eliminates this vulnerability.

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Productinfo

Type

Name

Version

License

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: no mitigation known
Status: 🔍

0-Day Time: 🔒

Upgrade: GitLab 18.11.7/19.0.4/19.1.2

Timelineinfo

06/25/2026 CVE reserved
07/08/2026 +13 days Advisory disclosed
07/08/2026 +0 days VulDB entry created
07/08/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: gitlab.com
Status: Confirmed

CVE: CVE-2026-13320 (🔒)
GCVE (CVE): GCVE-0-2026-13320
GCVE (VulDB): GCVE-100-377020

Entryinfo

Created: 07/08/2026 23:37
Changes: 07/08/2026 23:37 (53)
Complete: 🔍
Cache ID: 216::103

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