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CVE-2026-40965

CVSS 10.0 · Critical

Possible ATT&CK Techniques 1AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2026-40965

Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
Cloud Foundry UAA versions v76.12.0 through v78.12.0 are vulnerable to a private key exposure. The server contains a vulnerability where EC (Elliptic Curve) private keys are inadvertently exposed through the public /token_keys endpoint. This endpoint is designed to provide public key material for JWT token verification but incorrectly exposes private key components for EC keys. The vulnerability affects deployments using EC keys for JWT token signing. The vulnerability does not affect RSA key configurations, only deployments using EC keys for JWT signing. Affected versions: - uaa_release: v76.12.0 through v78.12.0 (inclusive); fixed in v78.13.0 or later - CF Deployment: v30.0.0 through v56.0.0 (inclusive); fixed in v56.1.0 or later (bundles uaa_release v78.13.0)
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
信息暴露
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Cloud Foundry Foundationuaa_release 76.12.0 ~ 78.13.0 -
Cloud Foundry FoundationCF Deployment 30.0.0 ~ 56.1.0 -

II. Public POCs for CVE-2026-40965

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III. Intelligence Information for CVE-2026-40965

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Security Blog Posts for CVE-2026-40965 (1)

IV. Related Vulnerabilities

Same vendor: Cloud Foundry Foundation
Same weakness: CWE-200

V. Comments for CVE-2026-40965

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