What is CVE-2026-48923?

CVE-2026-48923 is a medium-severity vulnerability in Jenkins Appspider, classified under Improper Privilege Management. CVSS score: 4.3/10. Published 2026-05-27.

How severe is CVE-2026-48923?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Privilege escalation in Jenkins Appspider

CVE-2026-48923

Jenkins AppSpider Plugin 1.0.17 and earlier does not perform a permission check in a method implementing form validation, allowing attackers with Overall/Read permission to connect to an attacker-specified URL.

Vulnerability class: Privilege Escalation

Published 2026-05-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (18.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Jenkins Appspider
Jenkins Project Appspider Plugin — versions 0

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

www.jenkins.io/security/advisory/2026-05-27/ (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-48923?: CVE-2026-48923 is a medium-severity vulnerability in Jenkins Appspider, classified under Improper Privilege Management. CVSS score: 4.3/10. Published 2026-05-27.
How severe is CVE-2026-48923?: Medium severity. CVSS v3 base score is 4.3 out of 10.