CVE Vulnerabilities

CVE-2020-13262

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Published: Jun 19, 2020 | Modified: Jul 21, 2021
CVSS 3.x
6.1
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N
RedHat/V2
RedHat/V3
Ubuntu

Client-Side code injection through Mermaid markup in GitLab CE/EE 12.9 and later through 13.0.1 allows a specially crafted Mermaid payload to PUT requests on behalf of other users via clicking on a link

Weakness

The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

Affected Software

Name Vendor Start Version End Version
Gitlab Gitlab 12.10.0 *
Gitlab Gitlab 12.10.0 *
Gitlab Gitlab 12.9.0 *
Gitlab Gitlab 12.9.0 *
Gitlab Gitlab 13.0.0 13.0.0
Gitlab Gitlab 13.0.0 13.0.0

Potential Mitigations

References