Uncontrolled Memory Allocation in cel-go
Priority LOW 36CWE-789Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-789.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00161 5th percentileScored 2026-11-07
Fix Partial cel-go (Google): 0.29.0Red Hat: 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA cel-go (Google) Fixed in 0.29.0
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-83530
- 2026-10-03 Alias added: GHSA-c2gw-4533-c2w3
References
Sources
- CVE-2026-83530 · CVE Program
- CVE-2026-83530 · NVD
- FIRST EPSS
- GHSA-c2gw-4533-c2w3 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-83530 · Red Hat security data · CC BY 4.0
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