title: Apostrophe - XSS
description: Apostrophe CMS versions between 2.63.0 to 3.3.1 are vulnerable to Stored XSS where an editor uploads an SVG file that contains malicious JavaScript onto the Images module, which triggers XSS once viewed.
problem types: CWE-79 Cross-site Scripting (XSS)
affected:
{
product: Apostrophe
vendor: Apostrophe
versions:
lessThanOrEqual: 3.3.1, status: affected, version: unspecified, versionType: custom
lessThan: unspecified, status: affected, version: 2.63.0, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 5.4
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: LOW
privilegesRequired: LOW
scope: CHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
version: 3.1
]
solutions: Upgrade to version 3.4.0