CVE-2025-1781 - CVE House
Back to Database
Status published High CVE-2025-1781

There is a XXE in W3CSS Validator versions before cssval-20250226 that...

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-1781

Credits & Attribution

No credits recorded in the NVD database.

References

Affected Vendor

Affected Software

CSS Validator
Vulnerable Versions:
< cssval-20250226

Timeline

Official Publish: March 28th, 2025
Last Modified: March 28th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

CWE-611

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1005 Data from Local System
Collection
T1040 Network Sniffing
Collection
T1105 Ingress Tool Transfer
Command and Control
T1499 Endpoint Denial of Service
Impact