XSS in Backdropcms Backdrop
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 ensure they do not contain potentially dangerous SVG tags. SVG images can contain clickable…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (9.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Backdropcms Backdrop — versions 1.28.0, 1.29.0
- Backdropcms Backdrop_cms
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-25063?
- CVE-2025-25063 is a medium-severity vulnerability in Backdropcms Backdrop, classified under Cross-site Scripting. CVSS score: 4.4/10. Published 2025-02-03.
- How severe is CVE-2025-25063?
- Medium severity. CVSS v3 base score is 4.4 out of 10.
- Is CVE-2025-25063 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.