Integer overflow in Azure Go-Ntlmssp
CVE-2026-32952
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.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.015 (72.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 72.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.015 · change: +0.004
Affected products
- Azure Go-Ntlmssp — versions < 0.1.1
- Microsoft Go-Ntlmssp
Weakness classification (CWE)
References
- github.com/Azure/go-ntlmssp/security/advisories/GHSA-pjcq-xvwq-hhpj (Vendor Advisory)
- github.com/Azure/go-ntlmssp/releases/tag/v0.1.1 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-32952?
- CVE-2026-32952 is a medium-severity vulnerability in Azure Go-Ntlmssp, classified under Integer Overflow or Wraparound. CVSS score: 5.3/10. Published 2026-04-24.
- How severe is CVE-2026-32952?
- Medium severity. CVSS v3 base score is 5.3 out of 10.