What is CVE-2023-39155?

CVE-2023-39155 is a medium-severity vulnerability in Jenkins Chef Identity, classified under Exposure of Resource to Wrong Sphere. CVSS score: 5.3/10. Published 2023-07-26.

How severe is CVE-2023-39155?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Jenkins Chef Identity

CVE-2023-39155

Jenkins Chef Identity Plugin 2.0.3 and earlier does not mask the user.pem key form field, increasing the potential for attackers to observe and capture it.

Published 2023-07-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.005 (41.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Jenkins Chef Identity
Jenkins Project Chef Identity Plugin — versions 0

Weakness classification (CWE)

CWE-668 — Exposure of Resource to Wrong Sphere

References

www.jenkins.io/security/advisory/2023-07-26/ (vendor-advisory, Vendor Advisory)
www.openwall.com/lists/oss-security/2023/07/26/2 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2023-39155?: CVE-2023-39155 is a medium-severity vulnerability in Jenkins Chef Identity, classified under Exposure of Resource to Wrong Sphere. CVSS score: 5.3/10. Published 2023-07-26.
How severe is CVE-2023-39155?: Medium severity. CVSS v3 base score is 5.3 out of 10.