description: 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
problem types: Improper neutralization of input during web page generation ('cross-site scripting') in GitLab
affected:
{
product: GitLab
vendor: GitLab
versions:
status: affected, version: >=12.9, <12.9.8
status: affected, version: >=12.10, <12.10.7
status: affected, version: >=13.0, <13.0.1
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 6.1
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: LOW
privilegesRequired: NONE
scope: CHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
version: 3.1
]