CVE-2025-25063: An XSS issue was discovered in Backdrop CMS 1.28.x before 1.28.5 and 1.29.x before 1.29.3. It does not sufficiently validate uploaded SVG images to...
Description
An XSS issue was discovered in Backdrop CMS 1.28.x before 1.28.5 and 1.29.x before 1.29.3. It does not sufficiently validate uploaded SVG images to ensure they do not contain potentially dangerous SVG tags. SVG images can contain clickable links and executable scripting, and using a crafted SVG, it is possible to execute scripting in the browser when an SVG image is viewed. This issue is mitigated by the attacker needing to be able to upload SVG images, and that Backdrop embeds all uploaded SVG images within tags, which prevents scripting from executing. The SVG must be viewed directly by its URL in order to run any embedded scripting.
Classification
CVE ID: CVE-2025-25063
CVSS Base Severity: MEDIUM
CVSS Base Score: 4.4
CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
Affected Products
Vendor: backdropcms
Product: backdrop
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.04% (probability of being exploited)
EPSS Percentile: 11.83% (scored less or equal to compared to others)
EPSS Date: 2025-03-04 (when was this score calculated)