{
  "schema_version": "1.5.0",
  "id": "CURL-CVE-2026-13608",
  "aliases": [
    "CVE-2026-13608"
  ],
  "summary": "OpenLDAP SASL authentication bypass",
  "modified": "2026-09-02T08:08:12.00Z",
  "database_specific": {
    "package": "curl",
    "affects": "both",
    "URL": "https://curl.se/docs/CVE-2026-13608.json",
    "www": "https://curl.se/docs/CVE-2026-13608.html",
    "issue": "https://hackerone.com/reports/3822248",
    "CWE": {
      "id": "CWE-923",
      "desc": "Improper Restriction of Communication Channel to Intended Endpoints"
    },
    "last_affected": "8.21.0",
    "severity": "Low"
  },
  "published": "2026-09-02T08:00:00.00Z",
  "affected": [
    {
      "ranges": [
        {
           "type": "SEMVER",
           "events": [
             {"introduced": "7.82.0"},
             {"fixed": "8.22.0"}
           ]
        },
        {
           "type": "GIT",
           "repo": "https://github.com/curl/curl.git",
           "events": [
             {"introduced": "eeca818b1e8d1e61c2d4d833aed56ce4c510a9d4"},
             {"fixed": "ea71c3b6b60e563651ea8596a975aef0c8199519"}
           ]
        }
      ],
      "versions": [
        "8.21.0", "8.20.0", "8.19.0", "8.18.0", "8.17.0", "8.16.0", "8.15.0", 
        "8.14.1", "8.14.0", "8.13.0", "8.12.1", "8.12.0", "8.11.1", "8.11.0", 
        "8.10.1", "8.10.0", "8.9.1", "8.9.0", "8.8.0", "8.7.1", "8.7.0", 
        "8.6.0", "8.5.0", "8.4.0", "8.3.0", "8.2.1", "8.2.0", "8.1.2", 
        "8.1.1", "8.1.0", "8.0.1", "8.0.0", "7.88.1", "7.88.0", "7.87.0", 
        "7.86.0", "7.85.0", "7.84.0", "7.83.1", "7.83.0", "7.82.0"
      ]
    }
  ],
  "credits": [
    {
      "name": "Eunsoo Kim (Autonomous Code Security team at Microsoft)",
      "type": "FINDER"
    },
    {
      "name": "Eunsoo Kim",
      "type": "REMEDIATION_DEVELOPER"
    }
  ],
  "details": "A flaw in the libcurl SASL negotiation for LDAP authentication allows an\nincomplete handshake sequence to be misinterpreted as a successful\ncryptographic verification. An attacker executing a Man-in-the-Middle (MITM)\nattack can inject a premature or shortcut response that bypasses complete peer\nvalidation."
}