Medium 6.9Published Sep 9, 2026

CVE-2026-83530Uncontrolled Memory Allocation in cel-go

Updated under an hour ago (2026-10-19 06:50 UTC)

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It affects Google cel-go and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Google cel-go

Exploited in the last 30 days

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.

CVSS: 6.9 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Weakness (CWE): CWE-789
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Google
NVD analysis: Analyzed
Record last updated: Sep 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Google cel-go google:cel_go (from the name)	before 0.29.0	CNA record
google common_expression_language google:common_expression_language	before 0.29.0	NVD

References

https://github.com/cel-expr/cel-go/pull/1302patch, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.