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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Google cel-go unaffected
Version Status Constraints
0 affected < 0.29.0

No data.

No data.

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No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/cel-expr/cel-go/pull/1302 cve-icon cve-icon
History

Wed, 09 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 09 Sep 2026 15:15:00 +0000

Type Values Removed Values Added
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.
Title Uncontrolled Memory Allocation in cel-go
Weaknesses CWE-789
References
Metrics cvssV4_0

{'score': 6.9, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Google

Published:

Updated: 2026-09-09T15:15:12.321Z

Reserved: 2026-08-31T16:27:40.016Z

Link: CVE-2026-83530

cve-icon Vulnrichment

Updated: 2026-09-09T15:15:09.385Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-09T15:17:12.123

Modified: 2026-09-09T16:17:11.983

Link: CVE-2026-83530

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-09T16:45:13Z

Weaknesses