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CVE-2026-83530

Uncontrolled Memory Allocation in cel-go

MEDIUM
4.3
CVSS Score
Published: September 9, 2026 at 02:56 PM UTC
Updated: September 23, 2026 at 08:50 PM UTC
1 product affected across 1 vendorCommon Expression Language

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Common Expression Language· Googlego
95%
v < 0.29.0
Affected range stops below 0.29.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

PatchVendor Advisory
Source: cverecord
https://github.com/cel-expr/cel-go/pull/1302

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-789

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