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Back to active CVEs
Medium · CVSS 6.9CVE-2026-83530

Uncontrolled Memory Allocation in cel-goCVE-2026-83530

Answer in brief

CVE-2026-83530 records a Medium severity (CVSS 6.9) vulnerability in Uncontrolled Memory Allocation in cel-go. The current sources do not mark it as known exploited. The current feed maps Google/cel-go (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

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

Published Sep 9, 2026Updated Sep 23, 2026Source checked Oct 25, 2026First seen by HOL Sep 9, 2026Material review Sep 23, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.9
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 6.9. 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 Google/cel-go (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:google:common_expression_language:*:*:*:*:*:go:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Google/cel-gogeneric>=0 <0.29.00.29.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Google/cel-go.
  2. 2Review the reported fix. Update Google/cel-go to 0.29.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 23, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 9, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
Upstream source description

A user could provide an expression whose string length is longer than the ParserExpressionSizeLimit() configured on the CEL environment, and a memory allocation would occur proportional to the size of the input before the limit would be checked / enforced.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Web::Simple versions before 0.035 for Perl allocate a buffer sized by the Content-Length header for urlencoded body parametersAlso CWE-789

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-789
Source
CVE List V5
Source checked
Oct 25, 2026
References
1 linked source
Open source record