CVE-2026-40964 PUBLISHED

Assigner: vmware
Reserved: 16.04.2026 Published: 01.06.2026 Updated: 02.06.2026

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)

Metrics

CVSS 3.1

CVSS 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
CVSS Score: 7.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	Cloud Foundry Foundation
Product	log-cache_release
Versions	Default: unaffected affected from 0 to 3.2.6 (incl.)

Vendor	Cloud Foundry Foundation
Product	CF Deployment
Versions	Default: unaffected affected from 0 to 55.?.0 (incl.)

References

https://www.cloudfoundry.org/blog/cve-2026-40964-read-access-to-cf-logs/

Problem Types

CWE-287: Improper Authentication CWE

Impacts

An unauthenticated remote attacker can gain read access to all logs and metrics for every application and platform component (confidentiality impact: HIGH; integrity and availability unaffected).