Jenkins Email Extension Plugin missing permission check

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

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

EPSS

• CVE-2023-32979: 0.50% estimated exploitation activity in the next 30 days; percentile 43.06 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Jenkins Email Extension Plugin 2.96 and earlier does not perform a permission check in a method implementing form validation. This allows attackers with Overall/Read permission to check for the existence of files in the email-templates/ directory in the Jenkins home directory on the controller file system. This form validation method requires the appropriate permission in Email Extension Plugin 2.96.1.

Published by the source

16 May 2023, 18:30 UTC

Last modified by the source

7 Nov 2023, 05:05 UTC

Source last checked

26 Oct 2026, 16:16 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-6gp4-2f92-j2w5

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# Patch Next advisory brief: CVE-2023-32979

Advisory: Jenkins Email Extension Plugin missing permission check
IDs: CVE-2023-32979, GHSA-6gp4-2f92-j2w5
Record: https://patchnext.com/advisories/cve-2023-32979 (revision 1, source checked 26 Oct 2026, 16:16 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: org.jenkins-ci.plugins:email-ext 2.96.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.jenkins-ci.plugins:email-ext: affected < 2.96.1; fixed in 2.96.1

## Suggested inspection (read-only)
- Maven org.jenkins-ci.plugins:email-ext: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.jenkins-ci.plugins:email-ext.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-6gp4-2f92-j2w5 (GitHub-reviewed advisory GHSA-6gp4-2f92-j2w5 lists affected ranges: Maven org.jenkins-ci.plugins:email-ext >=0 <2.96.1)

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