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    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.

    Published:Mar 28, 2025
    Last Modified:Aug 1, 2025
    EPS:Mar 28, 2025
    EPSS Score:0.00047
    CVSS Score:6.5

    Affected Products

    Vendor
    W3
    Product
    Css Validator
    Vendor
    W3c
    Product
    Css Validator

    Exploits

    https://github.com/google/security-research/security/advisories/GHSA-745m-xmq6-g6x7

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-221 Data Serialization External Entities Blowup

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High