go-ntlmssp NTLM challenges can panic on malformed payloads

{
  "id": "03d3220c722174bba3d94013445949f54aafa1aa484848bb5ece866241aba82f",
  "url": "https://osv.dev/vulnerability/CVE-2026-32952",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "go-ntlmssp NTLM challenges can panic on malformed payloads",
    "summary": "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.",
    "evidence": "osv:CVE-2026-32952",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-32952",
      "aliases": [
        "CVE-2026-32952",
        "GHSA-pjcq-xvwq-hhpj",
        "GO-2026-5543"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/azure/go-ntlmssp",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "bd8579c18d41bf5d91a5f74b1117c958f635b866"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.1.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "bd8579c18d41bf5d91a5f74b1117c958f635b866"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v0.1.1"
                  },
                  {
                    "cpe": "cpe:2.3:a:microsoft:go-ntlmssp:*:*:*:*:*:go:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.1.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.1.0",
            "v0.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-32952.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.045759969Z",
      "provider": "osv",
      "references": [
        "https://github.com/Azure/go-ntlmssp/releases/tag/v0.1.1",
        "https://github.com/Azure/go-ntlmssp/security/advisories/GHSA-pjcq-xvwq-hhpj",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32952.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-32952"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-190"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32952.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-32952",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498103,
  "published_at": "2026-04-24T01:46:31.573+00:00"
}