CVE-2026-48920
HighSummary
Jenkins Email Extension Plugin version 1933.v45cec755423f and earlier allows inlining images as `base64` in email content by setting the `data-inline` attribute, without restrictions on the image URLs. This allows attackers controlling the email content to specify `file:` URLs to read arbitrary files from the Jenkins controller filesystem.
Risk Assessment
Attackers may gain access to sensitive data stored on the Jenkins server, potentially leading to serious security breaches and data loss.
Recommendation
It is recommended to update the plugin to the latest version to mitigate this vulnerability and implement appropriate restrictions on email content.
Related vulnerabilities
- CVE-2026-82533Critical
DeepSeek Harness before 0.1.2-alpha.1 contains an authentication bypass vulnerability in its local HTTP control-plane API that allows attackers to gain full agent control by supplying a spoofed Host header, as the server validates only the client-supplied Host header value rather than the actual TCP connection origin.
- CVE-2026-26084Critical
An improper access control vulnerability in Fortinet FortiSandbox versions 5.0.0 through 5.0.5, 4.4.0 through 4.4.8, Cloud 5.0.4 through 5.0.5, and PaaS 5.0.4 through 5.0.5 may allow an attacker to access sensitive information via crafted HTTP requests.
- CVE-2026-79576Critical
An issue in the Single-Sign On (SSO) component of Digital-Infrastructure v9.6.7 allows attackers to authenticate as any user, including the Admin, without a password.
- CVE-2026-61516Critical
Netis NX10 firmware versions V4.0.1.5808 and V3.0.0.4142 contain an information disclosure vulnerability that allows unauthenticated attackers to retrieve the administrator password by sending a request to the sysinfo action in the web management interface without a valid session.
- CVE-2026-12745Critical
A deserialization of untrusted data vulnerability in Ivanti Neurons for ITSM before 2026.2 allows a remote unauthenticated attacker to execute arbitrary code on the server.
- CVE-2026-12744Critical
A deserialization of untrusted data vulnerability in Ivanti Neurons for ITSM before 2026.2 allows a remote unauthenticated attacker to execute arbitrary code on the server.
- CVE-2026-12650Critical
A deserialization of untrusted data vulnerability in Ivanti Neurons for ITSM before 2026.2 allows a remote authenticated attacker to execute arbitrary code on the server.
- CVE-2026-12647Critical
A Missing Authorization vulnerability in Ivanti Neurons for ITSM before 2026.2 allows a remote authenticated attacker to execute arbitrary code on the server.
- CVE-2026-12646Critical
A Missing Authorization vulnerability in Ivanti Neurons for ITSM before 2026.2 allows a remote authenticated attacker to execute arbitrary code on the server.
- CVE-2026-12645Critical
A Missing Authorization vulnerability in Ivanti Neurons for ITSM before 2026.2 allows a remote authenticated attacker to execute arbitrary code on the server.
Original NVD description (English source)
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.