CVE-2026-32952 PUBLISHED

go-ntlmssp NTLM challenges can panic on malformed payloads

Assigner: GitHub_M
Reserved: 17.03.2026 Published: 24.04.2026 Updated: 24.04.2026

go-ntlmssp is a Go package that provides NTLM/Negotiate authentication over HTTP. Prior to version 0.1.1, a malicious NTLM challenge message can causes an slice out of bounds panic, which can crash any Go process using ntlmssp.Negotiator as an HTTP transport. Version 0.1.1 patches the issue.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS Score: 5.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	Azure
Product	go-ntlmssp
Versions	Version < 0.1.1 is affected

References

https://github.com/Azure/go-ntlmssp/security/advisories/GHSA-pjcq-xvwq-hhpj
https://github.com/Azure/go-ntlmssp/releases/tag/v0.1.1

Problem Types

CWE-190: Integer Overflow or Wraparound CWE