CVE-2026-40969— Spring gRPC AuthenticationException message reflected to remote client
Quick assessment
Affected
Spring Spring gRPC
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 gRPC是美国威睿（Vmware）公司的一个支持gRPC通信的Spring应用开发扩展组件。 Vmware Spring gRPC 1.0.0至1.0.2版本存在安全漏洞，该漏洞源于每个服务器端AuthenticationException的原始消息返回给未认证的远程调用者，可能导致攻击者获取认证失败信息，用于进一步攻击。
Possible ATT&CK Techniques 1 AI
T1592 · Gather Victim Host Information
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I. Basic Information for CVE-2026-40969
Vulnerability Information
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Vulnerability Title
Spring gRPC AuthenticationException message reflected to remote client
Source: CVE Program / CVE List V5
Vulnerability Description
The raw message of every server-side AuthenticationException is returned to the unauthenticated remote caller in the gRPC status description. This allows an attacker to obtain information about the authentication failure, which may be useful for further attacks.
Affected versions:
Spring gRPC: 1.0.0 - 1.0.2 (fixed in 1.0.3). Older, unsupported versions are also affected.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过错误消息导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Vmware Spring gRPC 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vmware Spring gRPC是美国威睿（Vmware）公司的一个支持gRPC通信的Spring应用开发扩展组件。 Vmware Spring gRPC 1.0.0至1.0.2版本存在安全漏洞，该漏洞源于每个服务器端AuthenticationException的原始消息返回给未认证的远程调用者，可能导致攻击者获取认证失败信息，用于进一步攻击。
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 gRPC | 1.0.0 ~ 1.0.3 | - |
|
II. Public POCs for CVE-2026-40969
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-40969 (1)
Same Patch Batch · Spring · 2026-04-28 · 6 CVEs total
| CVE-2026-40978 | 8.8 HIGH | VMware Spring AI SQL注入漏洞 |
| CVE-2026-40967 | 8.6 HIGH | VMware Spring AI 代码注入漏洞 |
| CVE-2026-40980 | 6.5 MEDIUM | VMware Spring AI 资源管理错误漏洞 |
| CVE-2026-40979 | 6.1 MEDIUM | VMware Spring AI 安全漏洞 |
| CVE-2026-40968 | 4.3 MEDIUM | Spring gRPC SecurityContext leaks across requests on authorization failure |
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