CVE-2026-48920 — Jenkins Project / Jenkins Email Extension Plugin

CVE-2026-48920

Jenkins Project / Jenkins Email Extension Plugin PUBLISHED

Description (CNA)

Jenkins Email Extension Plugin 1933.v45cec755423f and earlier allows inlining images as `base64` in email content by setting the `data-inline` attribute, without restrictions on the image URLs that can be inlined, allowing attackers able to control the email content to specify `file:` URLs for images to read arbitrary files from the Jenkins controller filesystem.

Affected (CNA)

Vendor / product	Versions
Jenkins Project / Jenkins Email Extension Plugin	affected 0 through 1933.v45cec755423f

CWE

No CWE identifiers supplied.

References

https://www.jenkins.io/security/advisory/2026-05-27/#SECURITY-3705

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.