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CVE-2026-40989— Self Routing guard bypassed via function composition

Quick assessment

Affected
Spring Spring Cloud Function
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.

VMware Spring Cloud Function是美国威睿（VMware）公司的一个Java函数式应用开发框架。 VMware Spring Cloud Function存在安全漏洞，该漏洞源于路由层无限递归，可能导致请求处理时发生内存不足错误。以下版本受到影响：Spring Cloud Function 3.2.x 3.2.16之前版本、Spring Cloud Function 4.1.x 4.1.10之前版本、Spring Cloud Function 4.2.x 4.2.6之前版本、Spr

CVSS 5.7 · Medium EPSS 0.28% · P19

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 5

VendorProduct Version RangeStatus
Spring Spring Cloud Function 3.2.0< 3.2.16 affected
4.1.0< 4.1.10 affected
4.2.0< 4.2.6 affected
4.3.0< 4.3.3 affected
5.0.0< 5.0.2 affected
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I. Basic Information for CVE-2026-40989

Vulnerability Information
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Vulnerability Title
Self Routing guard bypassed via function composition
Source: CVE Program / CVE List V5
Vulnerability Description
Under infinite recursion in the routing layer, request-handling can cause OOM error. Affected Spring Products and Versions: Spring Cloud Function 3.2.x: versions prior to 3.2.16 Spring Cloud Function 4.1.x: versions prior to 4.1.10 Spring Cloud Function 4.2.x: versions prior to 4.2.6 Spring Cloud Function 4.3.x: versions prior to 4.3.3 Spring Cloud Function 5.0.x: versions prior to 5.0.2 Older, unsupported versions are also affected.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的递归
Source: CVE Program / CVE List V5
Vulnerability Title
VMware Spring Cloud Function 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
VMware Spring Cloud Function是美国威睿（VMware）公司的一个Java函数式应用开发框架。 VMware Spring Cloud Function存在安全漏洞，该漏洞源于路由层无限递归，可能导致请求处理时发生内存不足错误。以下版本受到影响：Spring Cloud Function 3.2.x 3.2.16之前版本、Spring Cloud Function 4.1.x 4.1.10之前版本、Spring Cloud Function 4.2.x 4.2.6之前版本、Spr
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
Spring Spring Cloud Function 3.2.0 ~ 3.2.16 -

II. Public POCs for CVE-2026-40989

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III. Intelligence Information for CVE-2026-40989

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Vendor Advisories for CVE-2026-40989 (1)

IV. Related Vulnerabilities

Same product: Spring Cloud Function
Same vendor: Spring
Same weakness: CWE-674

V. Comments for CVE-2026-40989

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