CVE-2026-61848

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    CVE-2026-61848

    Published: 30 Oct 2026Last Modified: 8 Nov 2026

    Summary: Crass: Non-ASCII characters cause superlinear CPU consumption

    Details: Crass is a Ruby CSS parser that's fully compliant with the CSS Syntax Level 3 specification. Prior to 1.0.7, when Crass parses input containing `non-ASCII characters`, inefficiencies in tracking the positions of `multi-byte characters` result in superlinear parsing time. An attacker-controlled CSS input consisting of many `non-ASCII characters` can therefore cause excessive CPU consumption and potentially denial of service. This issue is fixed in version 1.0.7.

    References: https://github.com/rgrove/crass/releases/tag/v1.0.7, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61848.json, https://github.com/rgrove/crass/security/advisories/GHSA-8vfg-2r28-hvhj, https://nvd.nist.gov/vuln/detail/CVE-2026-61848, http://github.com/rgrove/crass/commit/da29664648bf80a97a6439e030a4814291c9afa5

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -cfd5daa3ce23cd7b2356acf90ecb7a02defe002c

    Affected versions

    v1.0.6
    v1.0.5
    v1.0.4
    v1.0.3
    v1.0.2
    v1.0.1
    v1.0.0

    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
    CVE-2026-61848 | CVE-DB