# CVE-2026-83530

## Summary

- **CVE ID:** CVE-2026-83530
- **Severity:** MEDIUM
- **CVSS Score:** 6.9 (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)
- **CWE:** CWE-789
- **Published:** Sep 9, 2026
- **Last Modified:** Sep 9, 2026

## 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.

## Affected Products

- Google — cel-go (0)

## References

- [CNA](https://github.com/cel-expr/cel-go/pull/1302)

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._