{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0.5.15"
              },
              {
                "last_affected": "0.9.7"
              },
              {
                "introduced": "1.0.0"
              },
              {
                "fixed": "1.28.3"
              },
              {
                "introduced": "1.29.0"
              },
              {
                "fixed": "1.29.7"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "9628cfb584a6eb743e3fcdac15c835966be506a4"
            },
            {
              "last_affected": "955370fc8c12b1a945941f844adc9df49a0f3f32"
            },
            {
              "introduced": "a2a09a84eb0a7059880500e70b40796ab1dd0c4d"
            },
            {
              "fixed": "9b958b000776c88036cd800c66e7e4ad39e6fd41"
            },
            {
              "introduced": "235f409907fd60eb2d8f6ecdc0e5cb163dd6d45f"
            },
            {
              "fixed": "5ac6f49371f9fcdf21ca4b4fd2a8657576f0885b"
            }
          ],
          "repo": "https://github.com/nginx/nginx",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "unresolved_ranges": [
      {
        "cpes": [
          "cpe:2.3:a:f5:nginx_plus:*:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "r33"
          },
          {
            "fixed": "r35"
          }
        ],
        "source": "CPE_RANGE",
        "vendor_product": "f5:nginx_plus"
      },
      {
        "cpes": [
          "cpe:2.3:a:f5:nginx_plus:r32:-:*:*:*:*:*:*",
          "cpe:2.3:a:f5:nginx_plus:r32:p1:*:*:*:*:*:*",
          "cpe:2.3:a:f5:nginx_plus:r32:p2:*:*:*:*:*:*",
          "cpe:2.3:a:f5:nginx_plus:r32:p3:*:*:*:*:*:*",
          "cpe:2.3:a:f5:nginx_plus:r32:p4:*:*:*:*:*:*",
          "cpe:2.3:a:f5:nginx_plus:r35:-:*:*:*:*:*:*",
          "cpe:2.3:a:f5:nginx_plus:r35:p1:*:*:*:*:*:*",
          "cpe:2.3:a:f5:nginx_plus:r36:-:*:*:*:*:*:*",
          "cpe:2.3:a:f5:nginx_plus:r36:p1:*:*:*:*:*:*",
          "cpe:2.3:a:f5:nginx_plus:r36:p2:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "r32-NA"
          },
          {
            "last_affected": "r32-NA"
          },
          {
            "introduced": "r32-p1"
          },
          {
            "last_affected": "r32-p1"
          },
          {
            "introduced": "r32-p2"
          },
          {
            "last_affected": "r32-p2"
          },
          {
            "introduced": "r32-p3"
          },
          {
            "last_affected": "r32-p3"
          },
          {
            "introduced": "r32-p4"
          },
          {
            "last_affected": "r32-p4"
          },
          {
            "introduced": "r35-NA"
          },
          {
            "last_affected": "r35-NA"
          },
          {
            "introduced": "r35-p1"
          },
          {
            "last_affected": "r35-p1"
          },
          {
            "introduced": "r36-NA"
          },
          {
            "last_affected": "r36-NA"
          },
          {
            "introduced": "r36-p1"
          },
          {
            "last_affected": "r36-p1"
          },
          {
            "introduced": "r36-p2"
          },
          {
            "last_affected": "r36-p2"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "f5:nginx_plus"
      }
    ]
  },
  "details": "When the ngx_mail_auth_http_module module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when (1) CRAM-MD5 or APOP authentication is enabled, and (2) the authentication server permits retry by returning the Auth-Wait response header. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.",
  "id": "CVE-2026-27651",
  "modified": "2026-07-08T05:36:50.380512513Z",
  "published": "2026-03-24T15:16:32.910Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-27651"
    },
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27651.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:10065"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:13634"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:13680"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:13839"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:14836"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:15942"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:15943"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:15945"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:15966"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:6906"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:6907"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:6923"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:7002"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:7343"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:8346"
    },
    {
      "type": "ADVISORY",
      "url": "https://my.f5.com/manage/s/article/K000160383"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2450791"
    }
  ],
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}