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CVE-2026-44305

Full vulnerability record from the local CVENow database.

Description

Lemur manages TLS certificate creation. Prior to 1.9.0, when LDAP TLS is enabled (LDAP_USE_TLS = True), Lemur's LDAP authentication module unconditionally disables TLS certificate verification at the global ldap module level. This allows a man-in-the-middle attacker positioned between Lemur and the LDAP server to intercept all authentication credentials. This vulnerability is fixed in 1.9.0.

Severity
MEDIUM
CVSS score
6.8 (v3.1)
Vulnerability status
Deferred
Source identifier
Published
2026-05-12 22:16:37.280000
Last modified
2026-10-26 00:10:00.150000
View original CVE JSON
{
  "id": "CVE-2026-44305",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-12T22:16:37.280",
  "lastModified": "2026-10-26T00:10:00.150",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Lemur manages TLS certificate creation. Prior to 1.9.0, when LDAP TLS is enabled (LDAP_USE_TLS = True), Lemur's LDAP authentication module unconditionally disables TLS certificate verification at the global ldap module level. This allows a man-in-the-middle attacker positioned between Lemur and the LDAP server to intercept all authentication credentials. This vulnerability is fixed in 1.9.0."
    },
    {
      "lang": "es",
      "value": "Lemur gestiona la creación de certificados TLS. Antes de la versión 1.9.0, cuando TLS LDAP está habilitado (LDAP_USE_TLS = True), el módulo de autenticación LDAP de Lemur deshabilita incondicionalmente la verificación de certificados TLS a nivel del módulo ldap global. Esto permite a un atacante man-in-the-middle posicionado entre Lemur y el servidor LDAP interceptar todas las credenciales de autenticación. Esta vulnerabilidad está corregida en la versión 1.9.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Netflix",
          "product": "lemur",
          "versions": [
            {
              "version": "< 1.9.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "baseScore": 6.8,
          "baseSeverity": "MEDIUM",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 5.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-13T14:26:27.895767Z",
          "id": "CVE-2026-44305",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-295"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/Netflix/lemur/security/advisories/GHSA-vr7c-r5gj-j3w5",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/Netflix/lemur/security/advisories/GHSA-vr7c-r5gj-j3w5",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}