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TI-2026-36179 Aliases CVE-2026-48920GHSA-mq58-m26g-46gp

Jenkins Email Extension Plugin 1933.v45cec755423f and earlier allows inlining images as…

Priority MEDIUM 40CWE-73Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00288 21st percentileScored 2026-11-07
Fix Partial org.jenkins-ci.plugins:email-ext (Maven): 1933.1935.v276319e3cc47Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
JenkinsJenkins Email Extension Pluginup to 1933.v45cec755423f—No fix listedCNA
—org.jenkins-ci.plugins:email-ext (Maven)before 1933.1935.v276319e3cc471933.1935.v276319e3cc47Patch availableGHSA-mq58-m26g-46gp
  • Jenkins Email Extension Plugin VendorJenkins Affected up to 1933.v45cec755423f Fixed in — No fix listed CNA
  • org.jenkins-ci.plugins:email-ext (Maven) Vendor— Affected before 1933.1935.v276319e3cc47 Fixed in 1933.1935.v276319e3cc47 Patch available GHSA-mq58-m26g-46gp

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:jenkins:email_extension:*:*:*:*:*:jenkins:*:*up to 1925.v1598902b_58ddVulnerableJenkins
cpe:2.3:a:jenkins:email_extension:1933.v45cec755423f:*:*:*:*:jenkins:*:*1933.v45cec755423fVulnerableJenkins
  • cpe:2.3:a:jenkins:email_extension:*:*:*:*:*:jenkins:*:* Versions up to 1925.v1598902b_58dd Vulnerable ·Jenkins
  • cpe:2.3:a:jenkins:email_extension:1933.v45cec755423f:*:*:*:*:jenkins:*:* Versions 1933.v45cec755423f Vulnerable ·Jenkins

Remediation

  • Fix · GHSA-mq58-m26g-46gp org.jenkins-ci.plugins:email-ext (Maven) Fixed in 1933.1935.v276319e3cc47 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
OpenShift Developer Tools and ServicesAffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-48920
  2. 2026-10-03 Alias added: GHSA-mq58-m26g-46gp

References

Advisory 2

Other 1

  • TI-2019-15877 Protection mechanism failure in Jenkins Email Extension Plugin CVSS 3.1CRITICAL 9.9
  • TI-2023-11037 Protection mechanism failure in Jenkins Email Extension Plugin CVSS 3.1CRITICAL 9.9
  • TI-2020-02109 Cleartext transmission of sensitive information in Jenkins Email Extension Plugin CVSS 3.1HIGH 7.5
  • TI-2018-15825 An exposure of sensitive information vulnerability exists in Jenkins Email Extension… CVSS 3.0MEDIUM 6.5
  • TI-2017-01904 Information disclosure in [UNKNOWN] jenkins-email-ext CVSS 3.0MEDIUM 5.3
  • TI-2023-11036 Cross-site scripting in Jenkins Email Extension Plugin CVSS 3.1MEDIUM 5.4
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences