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  4. CVE 2026 61845 crass large numeric exponents cause cpu and
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High severityCVE-2026-61845GHSA-6WMF-3R64-VCWV

Crass : Large numeric exponents cause CPU and memory denial of serviceCVE-2026-61845

Answer in brief

CVE-2026-61845 records a High severity vulnerability in Crass : Large numeric exponents cause CPU and memory denial of service. The current sources do not mark it as known exploited. The current feed maps crass (rubygems). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 20, 2026Updated Oct 20, 2026Source checked Oct 20, 2026First seen by HOL Oct 20, 2026Material review Oct 20, 2026
Upstream Advisory

Key facts

Risk
High
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps crass (rubygems). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
crassrubygems<1.0.71.0.7

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for crass.
  2. 2Review the reported fix. Update crass to 1.0.7 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 20, 2026

    Evidence: source:ghsa:source_dates:source-dates:record
  2. Source modified

    Oct 20, 2026

    Evidence: source:ghsa:source_dates:source-dates:record
  3. First seen by HOL

    Oct 20, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencerubygems.org
Upstream source description

### Impact Crass converts CSS scientific notation number values with unbounded exponentiation before it clamps the result to `Float::MAX`. Applications that use Crass to parse attacker-controlled CSS strings can be forced to spend disproportionate CPU and memory parsing a tiny input, possibly resulting in a crash. ### Patches This is fixed in Crass 1.0.7. ### Related - https://github.com/rubysec/ruby-advisory-db/blob/master/gems/crass/GHSA-6wmf-3r64-vcwv.yml

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-674
Source
GitHub Security Advisories
Source checked
Oct 20, 2026
References
5 linked sources
Open source record