Vulnerability Report

CVE-2026-48920

Title: Jenkins Email Extension Plugin Arbitrary File Read via Image Inlining

Arbitrary File Read

Proof Of Concept

No public PoC currently indexed for CVE-2026-48920.

CWE Category NVD-CWE-noinfo

Published Date May 27, 2026

Modified Date May 28, 2026

Exploit Status Not Found

Score 8.8 CVSS v

Exploit Probability (EPSS)

0.44%

Vulnerability Summary

CVE-2026-48920: 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.

Impacted Vendors

jenkins 1

Reference Links

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

CVSS v3.1

Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0

Severity HIGH

8.8

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-48920 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

May 28, 2026 MODIFIED

Vulnerability data updated via NVD.

May 27, 2026 MODIFIED

Vulnerability data updated via NVD.

May 27, 2026 MODIFIED

Vulnerability data updated via NVD.

May 27, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.