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.
Published: 2026-05-27
Score: 8.8 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Wed, 27 May 2026 16:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-73
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 27 May 2026 15:15:00 +0000

Type Values Removed Values Added
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.
References

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: jenkins

Published:

Updated: 2026-05-27T15:43:07.808Z

Reserved: 2026-05-26T14:50:46.813Z

Link: CVE-2026-48920

cve-icon Vulnrichment

Updated: 2026-05-27T15:43:00.473Z

cve-icon NVD

Status : Received

Published: 2026-05-27T15:16:31.647

Modified: 2026-05-27T15:16:31.647

Link: CVE-2026-48920

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses