CVE-2026-54638 td has pre-auth denial of service via unbounded memory allocation in proto.UnencryptedMessage.Decode

gotd/td is a T Telegram MTProto API client in Go. Prior to 0.145.1, proto.UnencryptedMessage.Decode in proto/unencryptedmessage.go read attacker controlled dataLen from an unauthenticated MTProto unencrypted packet and allocated makebyte, dataLen before checking the remaining buffer, allowing...

PT-2026-65618

Name of the Vulnerable Software and Affected Versions gotd/td versions prior to 0.145.1 Description A remote unauthenticated attacker can cause a denial of service by sending a crafted unencrypted MTProto packet. The Decode function in proto.UnencryptedMessage reads an attacker-controlled 32-bit...