CVE-2026-48920

HighCVSS 8.8/10Last modified Oct 14, 2026

Description

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-73

Affected software

No affected versions have been published.

Timeline

Published: May 27, 2026
Last modified: Oct 14, 2026
NVD status: Analyzed

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