CyberRota Analysis
AI-GeneratedThe punchin-email Cloudflare Email Worker prior to version 1.5.0 is vulnerable due to its handling of inbound alias mail, which inadvertently drops the Reply-To header, allowing correspondents to directly reply to the operator's private inbox address. This could lead to unintended exposure of the operator's email address, although it does not compromise third-party data or allow for code execution or authentication bypass. Organizations using this service should prioritize upgrading to version 1.5.0 to mitigate the risk of email address exposure.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
punchin-email is a Cloudflare Email Worker that provides two-way role aliases while relaying mail to a private inbox. Prior to 1.5.0, handleInbound delivers inbound alias mail with message.forward(), which silently drops the added Reply-To header intended to route responses through the relay. When a correspondent sends mail to an alias and the operator replies, the mail client can send directly to the correspondent from the private FORWARD_TO inbox address, exposing that address. The disclosure is limited to the operator's own email address and does not expose third-party data or provide code execution or authentication bypass. This issue is fixed in version 1.5.0.