Bug 2482212 (CVE-2026-48920)

Summary: CVE-2026-48920 jenkins-email-extension-plugin: Jenkins Email Extension Plugin: Information disclosure via arbitrary file read
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Jenkins Email Extension Plugin. An attacker with the ability to control email content can exploit this vulnerability by inlining images with `file:` URLs. This allows the attacker to read arbitrary files from the Jenkins controller filesystem, leading to information disclosure.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-05-27 16:02:14 UTC
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.