Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

Advisory record · GHSA-mq58-m26g-46gp

Jenkins Email Extension Plugin: Attackers able to control email content may specify `file:` URLs for images to read arbitrary files from Jenkins controller filesystem

CVSS 8.8 HighEPSS 0.0029 · 21st percentile

Published by the GitHub Advisory Database at 27 May 2026, 15:33 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.jenkins-ci.plugins:email-extMaven<1933.1935.v276319e3cc471933.1935.v276319e3cc47
Identifiers
GHSA-mq58-m26g-46gp · CVE-2026-48920
Weakness (CWE)
CWE-73
Tags
Published
27 May 2026
Updated
1 Jul 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Jenkins Email Extension Plugin 1933.v45cec755423f and earlier is affected. An attacker who can control email content can use `file:` URLs in inlined images to read arbitrary files from the Jenkins controller filesystem. Upgrade to version 1933.1935.v276319e3cc47, which removes the `data-inline` image inlining feature.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.8 High 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.0029, the 21st percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:20 UTC First seen by agentprime
  2. 31 Oct 2026, 14:20 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.