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CVE-2026-48920

Quick assessment

Affected
Jenkins Project Jenkins Email Extension Plugin
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Jenkins Email Extension Plugin是Jenkins开源的一个Jenkins邮件通知与构建消息扩展插件。 Jenkins Email Extension Plugin 1933.v45cec755423f及之前版本存在安全漏洞，该漏洞源于通过设置data-inline属性允许在邮件内容中内联base64图像，且未限制可内联的图像URL，可能导致攻击者控制邮件内容时指定file:URL读取Jenkins控制器文件系统中的任意文件。

AI Predicted 9.8 Difficulty: Easy EPSS 0.29% · P21

Possible ATT&CK Techniques 1 AI

T1123 · Audio Capture

Affected Version Matrix 1

VendorProduct Version RangeStatus
Jenkins Project Jenkins Email Extension Plugin ≤ 1933.v45cec755423f affected
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I. Basic Information for CVE-2026-48920

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Jenkins Email Extension Plugin 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Jenkins Email Extension Plugin是Jenkins开源的一个Jenkins邮件通知与构建消息扩展插件。 Jenkins Email Extension Plugin 1933.v45cec755423f及之前版本存在安全漏洞，该漏洞源于通过设置data-inline属性允许在邮件内容中内联base64图像，且未限制可内联的图像URL，可能导致攻击者控制邮件内容时指定file:URL读取Jenkins控制器文件系统中的任意文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Jenkins Project Jenkins Email Extension Plugin 0 ~ 1933.v45cec755423f -

II. Public POCs for CVE-2026-48920

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III. Intelligence Information for CVE-2026-48920

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Vendor Advisories for CVE-2026-48920 (1)

Same Patch Batch · Jenkins Project · 2026-05-27 · 13 CVEs total

CVE-2026-48916 Jenkins LDAP Plugin 安全漏洞
CVE-2026-48917 Jenkins LDAP Plugin 安全漏洞
CVE-2026-48918 Jenkins Active Directory Plugin 安全漏洞
CVE-2026-48919 Jenkins Active Directory Plugin 安全漏洞
CVE-2026-48921 Jenkins Pipeline: Groovy Libraries Plugin 安全漏洞
CVE-2026-48922 Jenkins Credentials Binding Plugin 安全漏洞
CVE-2026-48924 Jenkins Bitbucket OAuth Plugin 安全漏洞
CVE-2026-48923 Jenkins AppSpider Plugin 安全漏洞
CVE-2026-48925 Jenkins GitHub Integration Plugin 安全漏洞
CVE-2026-48926 Jenkins Job Import Plugin 安全漏洞
CVE-2026-48927 Jenkins buildgraph-view Plugin 安全漏洞
CVE-2026-9674 Jenkins Multijob Plugin 安全漏洞

IV. Related Vulnerabilities

Same product: Jenkins Email Extension Plugin
Same vendor: Jenkins Project

V. Comments for CVE-2026-48920

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