CVE-2026-48920

EUVD-2026-32511
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 21%
Affected Products (NVD)
VendorProductVersion
jenkinsemail_extension
𝑥
≤ 1925.v1598902b_58dd
jenkinsemail_extension
1933.v45cec755423f:v45cec755423f
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://www.jenkins.io/security/advisory/2026-05-27/#SECURITY-3705