Log in / Sign up

Vulnerability details

CVE-2026-41005

Cloudfoundry CF DeploymentCloudfoundry UAA

UAA accepts SAML Encrypted Assertions authentication bypass

CVSS 3.1
9.0Critical

Official description

Cloud Foundry UAA incorrectly treated XML encryption to the Service Provider (confidentiality) as a substitute for XML signatures from the Identity Provider (authenticity) in two SAML flows: the OAuth 2.0 SAML2 bearer grant (token endpoint) and browser SSO (ACS) when wantAssertionSigned is set to false. Assertions or responses that were unsigned but contained encrypted content could still be accepted. Encryption uses the SP's public key from published metadata, therefore, any party, not only a trusted IdP, can produce ciphertext UAA can decrypt; successful decryption therefore does not prove the IdP issued the message. Affected versions: Cloud Foundry UAA (uaa_release) 2.0.0 through 78.13.0. Cloud Foundry CF Deployment all versions through 56.1.0.

CVSS scores

ScoreVersionSourceVector
9.0Critical 3.1 CVEProject cvelistV5 (CNA) (vmware) CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

VendorProductVersionsSource
Cloudfoundry CF Deployment v < 57.0.0 CVEProject cvelistV5 (CNA)
Cloudfoundry UAA 2.0.0 ≤ v < 78.14.0 CVEProject cvelistV5 (CNA)

References and advisories

1
Kolun on Telegram @kolunsec Exploited CVEs, key news and a daily digest Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.

Details

Published
2026-06-11
Last updated
2026-06-13
State
Published
Assigner (CNA)
vmware

Exploit prediction (EPSS)

0.13%
Probability of exploitation in 30 days
2.7%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
None
Technical impact
Total

Weaknesses (CWE)

  • CWE-347
    Improper Verification of Cryptographic Signature