CVE-2026-54638
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductGithub.com/gotd/td
PublishedJul 28, 2026
First seenJul 28, 2026
How to fix
Update
- github.com/gotd/td0.145.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/gotd/tdGo | v < 0.145.1 | 0.145.1 |
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