CVE-2026-48920

highpriority · track · 0EPSS 0.003 · 21 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.29% (21st) EPSS

CVSS 8.8 · high

Is it mine?

24 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · osv

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-73USCWE-73US

affected products (24)

Products and version ranges known to be affected.

Jenkins Jenkins Active Directory Plugin <2.41.1all versionscert_bundDE
Jenkins Jenkins AppSpider Plugin <1.0.18all versionscert_bundDE
Jenkins Jenkins Bitbucket OAuth Plugin <0.18all versionscert_bundDE
Jenkins Jenkins Credentials Binding Plugin <725.ve52b_2328a_fdeall versionscert_bundDE
Jenkins Jenkins Email Extension Plugin <1933.1935.v276319e3cc47all versionscert_bundDE
Jenkins Jenkins GitHub Integration Plugin <0.7.4all versionscert_bundDE
Jenkins Jenkins Job Import Plugin <143.145.v48f9a_a_6ff384all versionscert_bundDE
Jenkins Jenkins LDAP Plugin <807.809.vd3a_4e5e4ec98all versionscert_bundDE
Jenkins Jenkins Multijob Plugin <669.v9d96a_d9c71b_0all versionscert_bundDE
Jenkins Jenkins Pipeline: Groovy Libraries Plugin <798.v5cc688825312all versionscert_bundDE
jenkins Jenkins≤ Pipeline: Groovy Libraries Plugin <798.v5cc688825312cert_bundDE
jenkins Jenkins≤ Active Directory Plugin <2.41.1cert_bundDE
jenkins Jenkins≤ AppSpider Plugin <1.0.18cert_bundDE
jenkins Jenkins≤ Bitbucket OAuth Plugin <0.18cert_bundDE
jenkins Jenkins≤ Credentials Binding Plugin <725.ve52b_2328a_fdecert_bundDE
jenkins Jenkins≤ Email Extension Plugin <1933.1935.v276319e3cc47cert_bundDE
jenkins Jenkins≤ GitHub Integration Plugin <0.7.4cert_bundDE
jenkins Jenkins≤ Job Import Plugin <143.145.v48f9a_a_6ff384cert_bundDE
jenkins Jenkins≤ LDAP Plugin <807.809.vd3a_4e5e4ec98cert_bundDE
jenkins Jenkins≤ Multijob Plugin <669.v9d96a_d9c71b_0cert_bundDE

showing 20 of 24

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-1707Jenkins Plugins: Mehrere SchwachstellenDeutsch2026-05-27csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Jenkins Plugins ausnutzen, um Informationen offenzulegen, um Dateien zu manipulieren, um einen Cross-Site Scripting Angriff durchzuführen, um beliebigen Programmcode auszuführen, und um Sicherheitsvorkehrungen zu umgehen.
GHSA-mq58-m26g-46gpJenkins Email Extension Plugin: Attackers able to control email content may specify `file:` URLs for images to read arbitrary files from Jenkins controller filesystem2026-05-27ghsa · osvUS
Jenkins Email Extension Plugin 1933.v45cec755423f and earlier includes a feature that allows inlining images as `base64` in email content by setting the `data-inline` attribute. No restrictions are placed on the image URLs that can be inlined. This allows attackers able to control the email content to specify `file:` URLs for images to read arbitrary files from the Jenkins controller filesystem. The feature allowing inlining images as `base64` in email content by setting the `data-inline` attribute is removed from Email Extension Plugin 1933.1935.v276319e3cc47.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund osv NVD CVE.org MITRE

published 2026-05-27modified 2026-06-17

references (3)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan