CVE-2025-1781

Summary

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.

Affected Software

VendorProductVersion RangeStatus
W3CCSS Validator< cssval-20250226affected

Weaknesses

  • CWE-611: CWE-611 Improper Restriction of XML External Entity Reference

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: yes
    • Technical Impact: partial

References