CVE-2025-25063

low-risk
Published 2025-02-03

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 <img> tags, which prevents scripting from executing. The SVG must be viewed directly by its URL in order to run any embedded scripting.

Do I need to act?

-
0.61% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.4/10 Medium
NETWORK / HIGH complexity

Affected Products (1)

Affected Vendors

Backdropcms

References (1)

Vendor Advisory https://backdropcms.org/security/backdrop-sa-core-2025-002
21
/ 100
low-risk
Severity 14/34 · Moderate
Exploitability 2/34 · Minimal
Exposure 5/34 · Minimal