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Vulnerability record · CVE-2026-40964 · published 1 June 2026

CVE-2026-40964: Improper authentication vulnerability

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)

7.5 CVSS 3.1 High EPSS 0.65% · top 51.1% CWE-287 · Improper authentication Awaiting Analysis
7.5CVSS 3.1 base score
0.65%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
22 Jul 2026Last modified by NVD

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)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-40964), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.