CVE-2026-42519 Jenkins Script Security Plugin: Missing permission checks allow enumeration of pending and approved classpaths
Attackers with Overall/Read permission can enumerate pending and approved Script Security classpaths due to a missing permission check.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-42519?
CVE-2026-42519 is a medium-severity missing authorization vulnerability in Jenkins Script Security Plugin, published on 29 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A missing permission check in Jenkins Script Security Plugin 1399.ve6a_66547f6e1 and earlier allows attackers with Overall/Read permission to enumerate pending and approved Script Security classpaths.
Weakness: CWE-862
Which versions are affected by CVE-2026-42519?
2 open source packages ship an affected version, including org.jenkins-ci.plugins:script-security. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.jenkins-ci.plugins:script-security Maven | All versions | 1402.v94c9ce464861 |
org.jenkins-ci.plugins:script-security Maven | All versions | 1402.v94c9ce464861 |
Products include Jenkins Script Security.
How do I fix CVE-2026-42519?
Upgrade org.jenkins-ci.plugins:script-security to 1402.v94c9ce464861 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-42519 being exploited?
There is no known exploitation of CVE-2026-42519 in the wild and no public exploit code.
Other vulnerabilities in Jenkins Script Security Plugin
- CVE-2019-1003029 Jenkins Script Security Plugin Sandbox Bypass
- CVE-2022-43401 Sandbox bypass vulnerabilities in Jenkins Script Security Plugin and in Pipeline: Groovy Plugin
- CVE-2022-43403 Jenkins Script Security Plugin sandbox bypass vulnerability
- CVE-2022-43404 Sandbox bypass vulnerabilities in Jenkins Script Security Plugin and in Pipeline: Groovy Plugin
- CVE-2020-2279 Sandbox bypass vulnerability in Jenkins Script Security Plugin
Sources
Also known as GHSA-p334-gfhq-c7w6, MINI-85g8-xm34-c397, MINI-8xwf-v6q3-9q7r, MINI-h5rj-gh9v-gjwp, MINI-hwcj-fm5c-4fw3, MINI-mq3m-h279-hx4f and 2 more.