Is CVE-2026-48920 actively exploited?

No active exploitation of CVE-2026-48920 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-48920 be exploited remotely?

Yes. CVE-2026-48920 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-48920?

CVE-2026-48920 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2026-48920

CWE-73Published: May 27, 2026· Updated: May 28, 2026

8.8

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:13.3th

Official 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.

NVD Source

Technical Analysis

CVE-2026-48920 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.