High 7.5Published Jul 28, 2026

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

Updated under an hour ago (Oct 27, 2026, 11:10 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for gotd td

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-770, CWE-789
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Jul 29, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

gotd td gotd:td (from the name)	before 0.145.1	CNA record

References

References

https://github.com/gotd/td/security/advisories/GHSA-whmm-qj9r-wvr2	x-refsource-confirm
https://github.com/gotd/td/issues/1711	x-refsource-misc
https://github.com/gotd/td/commit/9d5d1f31ea5022d9798d84ccce15de2e91ba6baa	x-refsource-misc
https://github.com/gotd/td/releases/tag/v0.145.1	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.