Plunk
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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.
CRLF injection in Plunk email platform's SESService.ts allows authenticated API users to inject arbitrary MIME headers by embedding carriage return/line feed sequences in user-controlled fields (from.name, subject, custom headers, attachment filenames). Attackers can silently add Bcc headers for email forwarding, manipulate Reply-To addresses, or spoof senders by exploiting the lack of input sanitization before MIME message construction. CVSS 8.5 severity reflects network-accessible exploitation with low complexity requiring only low-privilege authentication. No public exploit identified at time of analysis, with EPSS data unavailable for this 2026 CVE identifier. Vendor-released patch: version 0.8.0 implements schema-level validation rejecting CR/LF characters.
SSRF in Plunk email platform before 0.7.0.
Plunk is an open-source email platform built on top of AWS SES. versions up to 0.7.1 is affected by cross-site scripting (xss) (CVSS 5.4).
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.
CRLF injection in Plunk email platform's SESService.ts allows authenticated API users to inject arbitrary MIME headers by embedding carriage return/line feed sequences in user-controlled fields (from.name, subject, custom headers, attachment filenames). Attackers can silently add Bcc headers for email forwarding, manipulate Reply-To addresses, or spoof senders by exploiting the lack of input sanitization before MIME message construction. CVSS 8.5 severity reflects network-accessible exploitation with low complexity requiring only low-privilege authentication. No public exploit identified at time of analysis, with EPSS data unavailable for this 2026 CVE identifier. Vendor-released patch: version 0.8.0 implements schema-level validation rejecting CR/LF characters.
SSRF in Plunk email platform before 0.7.0.
Plunk is an open-source email platform built on top of AWS SES. versions up to 0.7.1 is affected by cross-site scripting (xss) (CVSS 5.4).