Exploit for CRLF Injection in Useplunk Plunk

CVE-2026-34975 — CRLF Email Header Injection in Plunk via raw...

CVE-2026-34975 Plunk has a CRLF Email Header Injection in raw MIME message construction allows authenticated API user to inject arbitrary email headers

Plunk is an open-source email platform built on top of AWS SES. Prior to 0.8.0, a CRLF header injection vulnerability was discovered in SESService.ts, where user-supplied values for from.name, subject, custom header keys/values, and attachment filenames were interpolated directly into raw MIME...