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CVE-2026-83530— Uncontrolled Memory Allocation in cel-go

Quick assessment

Affected
Google cel-go
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Google cel-go是美国Google公司的一个提供表达式解析与求值能力的开发框架。 Google cel-go存在资源管理错误漏洞，该漏洞源于用户可提供长度超过CEL环境配置的ParserExpressionSizeLimit()限制的表达式，在检查或执行该限制前会进行与输入大小成比例的内存分配，可能导致拒绝服务。

CVSS 6.9 · Medium EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1531 · Account Access Removal

Affected Version Matrix 1

VendorProduct Version RangeStatus
Google cel-go < 0.29.0 affected
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I. Basic Information for CVE-2026-83530

Vulnerability Information
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Vulnerability Title
Uncontrolled Memory Allocation in cel-go
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的内存分配
Source: CVE Program / CVE List V5
Vulnerability Title
Google cel-go 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google cel-go是美国Google公司的一个提供表达式解析与求值能力的开发框架。 Google cel-go存在资源管理错误漏洞，该漏洞源于用户可提供长度超过CEL环境配置的ParserExpressionSizeLimit()限制的表达式，在检查或执行该限制前会进行与输入大小成比例的内存分配，可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Google cel-go 0 ~ 0.29.0 -

II. Public POCs for CVE-2026-83530

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III. Intelligence Information for CVE-2026-83530

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Patches & Fixes for CVE-2026-83530 (1)

Same Patch Batch · Google · 2026-09-09 · 231 CVEs total

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CVE-2026-87470 Google Chrome 输入验证错误漏洞

Showing top 20 of 231 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same vendor: Google
Same weakness: CWE-789