CVE Catalog

CVE-2026-42192

MediumCVSS 5.4
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.18%

7th percentile - higher than 7% of all known CVEs

Summary

In the Plunk email platform prior to version 0.9.0, a stored XSS vulnerability exists in the campaign management feature. Email body content created by authenticated project members is stored and rendered in the admin dashboard using React's dangerouslySetInnerHTML without HTML sanitization.

Risk Assessment

A lower-privileged member can embed malicious scripts that execute in the context of an admin or other members, enabling session hijacking or unauthorized actions. The risk affects organizations using Plunk for email delivery.

Recommendation

Update Plunk to version 0.9.0 or later. Until updated, restrict campaign creation privileges and review campaign content before viewing it in the dashboard.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS