CVE-2026-42192 Details
Description
Plunk is an open-source email platform built on top of AWS SES. Prior to version 0.9.0, a stored cross-site scripting (XSS) vulnerability exists in the campaign management feature, where the email body content created by authenticated project members is stored and later rendered in the admin dashboard using React's dangerouslySetInnerHTML without any HTML sanitization. This allows a lower-privileged member to embed malicious scripts in a campaign's email body that execute in the context of any admin or other member who views the campaign, potentially enabling session hijacking or unauthorized actions on their behalf. This issue has been patched in version 0.9.0.
A stored cross-site scripting vulnerability has been identified in Plunk, an open-source email platform that utilizes AWS SES. This issue affects versions prior to 0.9.0 and arises within the campaign management feature. The vulnerability allows authenticated project members to inject malicious scripts into the email body of campaigns. These scripts are then executed in the context of any admin or member who views the campaign in the admin dashboard, where the content is rendered using React's dangerouslySetInnerHTML without proper HTML sanitization. This flaw could lead to session hijacking or unauthorized actions on behalf of the affected user.
Users can upgrade to Plunk version 0.9.0 or later to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 8, 2026CISA-ADP
Assessed May 12, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/useplunk/plunk/releases/tag/v0.9.0 | [email protected] | Release NotesVendor |
| https://github.com/useplunk/plunk/security/advisories/GHSA-mjqc-qrv3-24hq | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| useplunk plunk | All versions |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 8, 2026 | New CVE Received | [email protected] |