CVE-2026-22734— Cloud Foundry UAA SAML 2.0 Signature Bypass
Quick assessment
Affected
Cloud Foundry UUA
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.
Cloud Foundry cf-deployment和Cloud Foundry UUA都是美国Cloud Foundry基金会的产品。Cloud Foundry cf-deployment是一款Cloud Foundry部署工具。Cloud Foundry UUA是一个身份认证与授权管理服务。 Cloud Foundry UUA 78.7.0及之前版本和Cloud Foundry cf-deployment 54.14.0及之前版本存在安全漏洞，该漏洞源于SAML 2.0承载断言启用时接受未签名或未加
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I. Basic Information for CVE-2026-22734
Vulnerability Information
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Vulnerability Title
Cloud Foundry UAA SAML 2.0 Signature Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
Cloud Foundry UUA is vulnerable to a bypass that allows an attacker to obtain a token for any user and gain access to UAA-protected systems. This vulnerability exists when SAML 2.0 bearer assertions are enabled for a client, as the UAA accepts SAML 2.0 bearer assertions that are neither signed nor encrypted. This issue affects UUA from v77.30.0 to v78.7.0 (inclusive) and it affects CF Deployment from v48.7.0 to v54.14.0 (inclusive).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
Cloud Foundry cf-deployment和Cloud Foundry UUA 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cloud Foundry cf-deployment和Cloud Foundry UUA都是美国Cloud Foundry基金会的产品。Cloud Foundry cf-deployment是一款Cloud Foundry部署工具。Cloud Foundry UUA是一个身份认证与授权管理服务。 Cloud Foundry UUA 78.7.0及之前版本和Cloud Foundry cf-deployment 54.14.0及之前版本存在安全漏洞，该漏洞源于SAML 2.0承载断言启用时接受未签名或未加
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 |
|---|---|---|---|---|
| Cloud Foundry | UUA | v77.21.0 ~ v78.8.0 | - |
|
II. Public POCs for CVE-2026-22734
| # | POC Description | Source Link | Shenlong Link |
|---|
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V. Comments for CVE-2026-22734
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