What’s Vulnerable › Vulnerabilities
CVE-2026-83530: Uncontrolled Memory Allocation in cel-go
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-09 · updated 2026-09-23
- Weakness: CWE-789
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 Common Expression Language: before 0.29.0 — fixed in 0.29.0
How to fix
Upgrade to a fixed version: Google Common Expression Language 0.29.0. Check the vendor advisory for mitigations.
References
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