CVE-2026-40964CWE-287

Authentication Bypass in cf-auth-proxy in Cloud Foundry Foundation all installations allows an unauthenticated remote attacker to gain read access to every log…

High · published June 1, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
50.4
In the wild
Unconfirmed
What it is

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)

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00647 · 50.4th percentile
Weakness
CWE-287 · Improper Authentication
Published
2026-06-01T21:02Z
EPSS history
Timeline
  • 01 JUN 21:02Z
    Authentication Bypass in cf-auth-proxy in Cloud Foundry Foundation all installations allows an unauthenticated remote attacker to gain read access to every log…
    cvelistv5