CVE-2026-40964

Unauthenticated Access to Cloud Foundry Logs via cf-auth-proxy JWT Bypass

Published Jun 1, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
Authentication Bypass in cf-auth-proxy in Cloud Foundry Foundation all installations allows an unauthenticated remote attacker to gain read access to every log and metric for every application and platform component via minting a JWT that the cf-auth-proxy accepts as a valid logs.admin token.

Affected versions:
- log-cache_release: all versions through v3.2.6 (inclusive); fixed in v3.2.7 or later
- CF Deployment: all versions through v55.?.0 (inclusive); fixed in v55.?.0 or later (bundles log-cache_release v3.2.7)

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:X/RC:X/CR:M/IR:X/AR:X/MAV:N/MAC:L/MPR:N/MUI:N/MS:U/MC:H/MI:N/MA:N'}

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Type Values Removed Values Added
First Time appeared Cloudfoundry
Cloudfoundry cf-deployment
Cloudfoundry log-cache Release
Vendors & Products Cloudfoundry
Cloudfoundry cf-deployment
Cloudfoundry log-cache Release
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Unauthenticated Access to Cloud Foundry Logs via cf-auth-proxy JWT Bypass
Type Values Removed Values Added
Description Authentication Bypass in cf-auth-proxy in Cloud Foundry Foundation all installations allows an unauthenticated remote attacker to gain read access to every log and metric for every application and platform component via minting a JWT that the cf-auth-proxy accepts as a valid logs.admin token. Affected versions: - log-cache_release: all versions through v3.2.6 (inclusive); fixed in v3.2.7 or later - CF Deployment: all versions through v55.?.0 (inclusive); fixed in v55.?.0 or later (bundles log-cache_release v3.2.7)
Weaknesses CWE-287
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:X/RC:X/CR:M/IR:X/AR:X/MAV:N/MAC:L/MPR:N/MUI:N/MS:U/MC:H/MI:N/MA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
vmware
Published
Updated
Jun 11, 2026, 8:30 PM
Reserved
Apr 16, 2026, 2:18 AM
Status
Awaiting Analysis
Published
Jun 1, 2026, 10:16 PM
Modified
Jul 22, 2026, 6:10 PM