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High 8.8Published May 27, 2026

CVE-2026-48920Jenkins 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 c…

Updated under an hour ago ()

Does this affect you?

It affects Jenkins Project Jenkins Email Extension Plugin and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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.

CVSS
8.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-73
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
jenkins
NVD analysis
Analyzed
Record last updated
May 27, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
Jenkins Project Jenkins Email Extension Plugin
jenkins_project:jenkins_email_extension_plugin (from the name)
through 1933.v45cec755423f
CNA record
jenkins email_extension
jenkins:email_extension
through 1925.v1598902b_58dd; 1933.v45cec755423f
NVD

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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