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/unencrypted_message.go read attacker controlled dataLen from an unau…
Published: 2026-07-28 · CVSS: 7.5 · CVSS 3.1
gotd/td is a T Telegram MTProto API client in Go. Prior to 0.145.1, proto.UnencryptedMessage.Decode in proto/unencrypted_message.go read attacker controlled dataLen from an unauthenticated MTProto unencrypted packet and allocated make([]byte, dataLen) before checking the remaining buffer, allowing remote unauthenticated denial of service through excessive memory allocation and CPU or garbage collection pressure. This issue is fixed in version 0.145.1.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7