CVE-2026-83530CWE-789

CVE-2026-83530

Medium · published September 9, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
3.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
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
EPSS
0.00149 · 3.7th percentile
Weakness
CWE-789 · Memory Allocation with Excessive Size Value
Published
2026-09-09T19:17Z
Affected products (1)
ProductVersionsFixed in
google/common_expression_language< 0.29.00.29.0
References (1)
https://github.com/cel-expr/cel-go/pull/1302 · [email protected]
EPSS history
Timeline
  • 11 SEP 03:19Z
    EPSS moved — → 0%
    epss
  • 09 SEP 14:56Z
    Uncontrolled Memory Allocation in cel-go
    cvelistv5