espoofer

espoofer espoofer is an open-source testing tool to bypass SPF, DKIM, and DMARC authentication in email systems. It helps mail server administrators and penetration testers to check whether the target email server and client are vulnerable to email spoofing attacks or can be abused to send spoofi...

voron-crypto

Voron crypto/protocol library — request for review This is the crypto and messaging-protocol core of a small E2EE messenger project, pulled out on its own for outside review. It is not the whole product — the Android client and deployment config are intentionally left out; this is just the part...

Mr.SIP

SIP Security, Attack and Audit Framework Mr.SIP is...

CVE-2026-54433

CVE-2026-54433: Roundcube plain-text email stored XSS This repository contains a configurable Python proof of concept for CVE-2026-54433 , a stored cross-site scripting vulnerability in Roundcube's plain-text email renderer. An unauthenticated sender can deliver a crafted text/plain message. When...

EvilAhenk

CVE-2026-6508 EvilAhenk is a critical security vulnerability in the LiderAhenk Central Management System architecture that allows all clients to execute code with 'root' privileges on each other Unauthorized RCE & Lateral Movement. How the System Works In LiderAhenk, the management panel/central...

http-protocol-exfil

http-protocol-exfil Use the HTTP protocol version to send a file bit by bit "HTTP/1.0" is a 0 and "HTTP/1.1" is a 1. It uses GET requests so the Blue Team would only see the requests to your IP address. However, it takes a long time to send bigger files, for example it needs 1 hour to send 200 KB...

SpamChannel

SpamChannel Live worker hosted at https://spamchannel.haxxx.workers.dev UPDATE Aug 13 2023: Two days after my DEFCON 31 talk, MailChannels silently decided to require aDomain Lockdown Record in order to send emails from Cloudflare Workers meaning this code doesn't work anymore. However, because...

CVE-2026-114473

Incorrect authorization in the Sender Rewriting Scheme SRS of Progressive Robot hMailServer 6.2.1 through 6.3.6 allows a remote attacker to relay mail through the server to outside addresses. With SRS enabled, the server rewrites the envelope sender of mail it forwards to a signed SRS address at...

CVE-2026-114474

Use of a less trusted source for the envelope sender in the external-account download of Progressive Robot hMailServer 6.0.0 through 6.3.6 allows a remote unauthenticated attacker to have mail they write in the name of a domain the server hosts sent on by the server with an envelope sender at tha...

CVE-2026-114474 Use of Less Trusted Source in hMailServer

Use of a less trusted source for the envelope sender in the external-account download of Progressive Robot hMailServer 6.0.0 through 6.3.6 allows a remote unauthenticated attacker to have mail they write in the name of a domain the server hosts sent on by the server with an envelope sender at tha...

EUVD-2026-107317

Use of a less trusted source for the envelope sender in the external-account download of Progressive Robot hMailServer 6.0.0 through 6.3.6 allows a remote unauthenticated attacker to have mail they write in the name of a domain the server hosts sent on by the server with an envelope sender at tha...

CVE-2026-114473 Incorrect Authorization in hMailServer

Incorrect authorization in the Sender Rewriting Scheme SRS of Progressive Robot hMailServer 6.2.1 through 6.3.6 allows a remote attacker to relay mail through the server to outside addresses. With SRS enabled, the server rewrites the envelope sender of mail it forwards to a signed SRS address at...

CVE-2026-114473 Incorrect Authorization in hMailServer

Incorrect authorization in the Sender Rewriting Scheme SRS of Progressive Robot hMailServer 6.2.1 through 6.3.6 allows a remote attacker to relay mail through the server to outside addresses. With SRS enabled, the server rewrites the envelope sender of mail it forwards to a signed SRS address at...

CVE-2026-114473

Progressive Robot hMailServer versions 6.2.1 through 6.3.6 are vulnerable to an incorrect authorization flaw within the Sender Rewriting Scheme (SRS) . When SRS is enabled, the server fails to apply relay rules and SMTP authentication because it incorrectly treats messages sent to a valid SRS add...

EUVD-2026-107316

Incorrect authorization in the Sender Rewriting Scheme SRS of Progressive Robot hMailServer 6.2.1 through 6.3.6 allows a remote attacker to relay mail through the server to outside addresses. With SRS enabled, the server rewrites the envelope sender of mail it forwards to a signed SRS address at...

PT-2026-120652

Use of a less trusted source for the envelope sender in the external-account download of Progressive Robot hMailServer 6.0.0 through 6.3.6 allows a remote unauthenticated attacker to have mail they write in the name of a domain the server hosts sent on by the server with an envelope sender at tha...

PT-2026-120656

Insufficient preservation of the original sender in the forwarding of Progressive Robot hMailServer 6.0.0 through 6.3.6 allows a remote unauthenticated attacker to have mail they write, naming in its From an address at a domain the server hosts, delivered to other receivers as passing that domain...

PT-2026-120651

Incorrect authorization in the Sender Rewriting Scheme SRS of Progressive Robot hMailServer 6.2.1 through 6.3.6 allows a remote attacker to relay mail through the server to outside addresses. With SRS enabled, the server rewrites the envelope sender of mail it forwards to a signed SRS address at...

CVE-2026-91831

The Subscribe to Comments WordPress plugin before 2.3.3 does not sanitise newline characters from a notification sender-name setting before using it in e-mail headers, allowing users with Author-level access and above to inject arbitrary e-mail headers, such as a hidden Bcc, and to spoof the send...

EUVD-2026-104101

The Subscribe to Comments WordPress plugin before 2.3.3 does not sanitise newline characters from a notification sender-name setting before using it in e-mail headers, allowing users with Author-level access and above to inject arbitrary e-mail headers, such as a hidden Bcc, and to spoof the send...