CVE-2026-61848 (GCVE-0-2026-61848)

Vulnerability from cvelistv5 – Published: 2026-10-30 18:45 – Updated: 2026-10-30 18:45
VLAI
Title
Crass: Non-ASCII characters cause superlinear CPU consumption
Summary
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.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7984 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
rgrove crass Affected: < 1.0.7
guessed Create a notification for this product.
Show details on NVD website
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        }
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          "descriptions": [
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      "providerMetadata": {
        "dateUpdated": "2026-10-30T18:45:20.036Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
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          "name": "https://github.com/rgrove/crass/security/advisories/GHSA-8vfg-2r28-hvhj",
          "tags": [
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          ],
          "url": "https://github.com/rgrove/crass/security/advisories/GHSA-8vfg-2r28-hvhj"
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          "tags": [
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          "url": "http://github.com/rgrove/crass/commit/da29664648bf80a97a6439e030a4814291c9afa5"
        }
      ],
      "source": {
        "advisory": "GHSA-8vfg-2r28-hvhj",
        "discovery": "UNKNOWN"
      },
      "title": "Crass: Non-ASCII characters cause superlinear CPU consumption"
    }
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  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-61848",
    "datePublished": "2026-10-30T18:45:20.036Z",
    "dateReserved": "2026-07-10T20:28:17.513Z",
    "dateUpdated": "2026-10-30T18:45:20.036Z",
    "state": "PUBLISHED"
  },
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  "vulnerability-lookup:meta": {
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          }
        ],
        "id": "CVE-2026-61848",
        "lastModified": "2026-10-30T19:39:14.897",
        "metrics": {
          "cvssMetricV40": [
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              "cvssData": {
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                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
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                "attackRequirements": "PRESENT",
                "attackVector": "NETWORK",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 6.3,
                "baseSeverity": "MEDIUM",
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                "exploitMaturity": "NOT_DEFINED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
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                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "LOW",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/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",
                "version": "4.0",
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                "vulnIntegrityImpact": "NONE",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
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        "references": [
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            "url": "http://github.com/rgrove/crass/commit/da29664648bf80a97a6439e030a4814291c9afa5"
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      "current_release_date": "2026-10-30T20:09:25+00:00",
      "cve": "CVE-2026-61848",
      "id": "CVE-2026-61848",
      "initial_release_date": "2026-10-30T18:45:20.036000+00:00",
      "product_status:known_affected": "4",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "crass: crass: Denial of Service via crafted non-ASCII CSS input",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-61848.json",
      "version": "3"
    }
  }
}



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