CVE-2026-40965: Cloud Foundry Foundation uaa_release · Information Exposure
Affects Cloud Foundry Foundation uaa_releaseSource CVE Database V5
Not known to be exploited · CVSS 10.0 Critical : upgrade to 78.13.0 as a priority.
Data as of 30 Oct 2026, 06:59 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 28% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 78.13.0, 56.1.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:LExploitation evidence
Disclosed: evidence found.
CVE published 1 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Upgrade uaa_release to 78.13.0; CF Deployment to 56.1.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Cloud Foundry Foundationuaa_release | Affected
| Fixed in
|
| Cloud Foundry FoundationCF Deployment | Affected
| Fixed in
|
AI-suggested
A fix is available and should be applied by upgrading to uaa_release version 78.13.0 or later. For Cloud Foundry deployments, upgrade to version 56.1.0 or later, which bundles the patched uaa_release. Deployments using EC keys for JWT signing must prioritize this update to prevent private key exposure. RSA key configurations are not affected by this vulnerability. Patch status is confirmed by the vendor advisory specifying fixed versions.
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)