Emails were sent to addresses not associated with actual users of Jenkins by Email Extension Plugin

published 2018-08-06 8 y ago modified 2026-06-17 4 mo ago also GHSA-c8qr-vfjf-62q3 , EUVD-2022-3537

cvss: 3.7; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits: 0; none known

jenkins-email-ext before version 2.57.1 is vulnerable to an Information Exposure. The Email Extension Plugins is able to send emails to a dynamically created list of users based on the changelogs, like authors of SCM changes since the last successful build. This could in some cases result in emails being sent to people who have no user account in Jenkins, and in rare cases even people who were not involved in whatever project was being built, due to some mapping based on the local-part of email addresses.

Patch / fix

fixed in 2

maven org.jenkins-ci.plugins:email-ext 2.57.1
jenkins email_extension 2.57.1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-2654 updated 2026-06-30 cvss 3.7

jenkins-email-ext: Emails were sent to addresses not associated with actual users of Jenkins by Mailer Plugin

Red Hat OpenShift Enterprise 3 jenkins-email-ext
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.14% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.0	3.7	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD	3.0	5.3	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N
GitHub	3.0	5.3	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
maven	org.jenkins-ci.plugins:email-ext	<2.57.1	2.57.1

Affected products

[UNKNOWN] jenkins-email-ext

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

jenkins.io /security/advisory/2017-03-20/
vendor-advisory
bugzilla.redhat.com /show_bug.cgi?id=CVE-2017-2654
web, issue-tracking, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2017-2654
advisory
jenkins.io /security/advisory/2017-03-20
web

Sources

CVE List CVE-2017-2654
GitHub Advisory GHSA-c8qr-vfjf-62q3
NVD CVE-2017-2654

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary