What is CVE-2022-45400?

CVE-2022-45400 is a critical-severity vulnerability in Jenkins Japex, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.8/10. Published 2022-11-15.

How severe is CVE-2022-45400?

Critical severity. CVSS v3 base score is 9.8 out of 10.

XXE in Jenkins Japex

CVE-2022-45400

Jenkins JAPEX Plugin 1.7 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.

Vulnerability class: XXE (XML External Entity)

Published 2022-11-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (65.1th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 65.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: +0.000

Affected products

Jenkins Japex
Jenkins Project Japex Plugin — versions unspecified, next of 1.7

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

www.jenkins.io/security/advisory/2022-11-15/ (Vendor Advisory)
www.openwall.com/lists/oss-security/2022/11/15/4 (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2022-45400?: CVE-2022-45400 is a critical-severity vulnerability in Jenkins Japex, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.8/10. Published 2022-11-15.
How severe is CVE-2022-45400?: Critical severity. CVSS v3 base score is 9.8 out of 10.