CVE-2026-42192: medium-severity vulnerability in useplunk plunk
Plunk: Stored XSS in campaign view
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.4epss 0.2%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Affected products
useplunk · plunkRelated CVEs — useplunk plunk
In the same product, most dangerous first.
CVE-2026-32096CRITICALPlunk has SSRF via unvalidated AWS SNS SubscriptionConfirmation in POST /webhooks/snsEPSS 0.3%CVE-2026-34975HIGHPlunk has a CRLF Email Header Injection in raw MIME message construction allows authenticated API user to inject arbitrary email headersEPSS 0.2%CVE-2026-32095MEDIUMPlunk has Stored Cross-Site Scripting (XSS) via SVG File UploadEPSS 0.2%CVE-2026-42193CRITICALPlunk: SNS webhook forgeryEPSS 0.1%