CVE-2026-48920
8.8 · HIGHOverview
CVE-2026-48920 is a high-severity vulnerability affecting jenkins email_extension. It was published on May 27, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from jenkins. Update email_extension to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| jenkins | email_extension | 0 | Affected |
Frequently Asked Questions
What is CVE-2026-48920?
CVE-2026-48920 is a high-severity vulnerability affecting jenkins email_extension. It was published on May 27, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
How severe is CVE-2026-48920?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-48920?
Check the references section for vendor advisories and patches from jenkins. Update email_extension to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-48920?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-48920 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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