CVE-2025-1781

There is a XXE in W3CSS Validator versions before cssval-20250226 that allows an attacker to use specially-crafted XML objects to coerce server-side request forgery (SSRF). This could be exploited to read arbitrary local files if an attacker has access to exception messages.

CVSS v4.0

8.4 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

0.38% chance of exploitation in the next 30 days, 31th percentile

Published

2025-03-28

Proof-of-concept exploits (1)

• google/security-research/security/advisories/GHSA-745m-xmq6-g6x7

References

• CVE Record
• NVD entry

Related

• CVE-2018-20840
• CVE-2020-8887
• CVE-2020-8911
• CVE-2020-8912
• CVE-2021-22543
• CVE-2021-22555