Vulnerability from cleanstart
Published
2026-01-30 17:14
Modified
2026-01-29 18:58
Summary
When multiple server blocks are configured to share the same IP address and port, an attacker can use session resumption to bypass client certificate authentication requirements on these servers
Details

Multiple security vulnerabilities affect the nginx package. When multiple server blocks are configured to share the same IP address and port, an attacker can use session resumption to bypass client certificate authentication requirements on these servers. See references for individual vulnerability details.

References
https://github.com/cleanstart-dev/cleanstart-secu… ADVISORY
https://osv.dev/vulnerability/CVE-2017-7529 WEB
https://osv.dev/vulnerability/CVE-2018-16845 WEB
https://osv.dev/vulnerability/CVE-2019-20372 WEB
https://osv.dev/vulnerability/CVE-2019-9511 WEB
https://osv.dev/vulnerability/CVE-2019-9513 WEB
https://osv.dev/vulnerability/CVE-2019-9516 WEB
https://osv.dev/vulnerability/CVE-2021-23017 WEB
https://osv.dev/vulnerability/CVE-2021-46461 WEB
https://osv.dev/vulnerability/CVE-2021-46462 WEB
https://osv.dev/vulnerability/CVE-2021-46463 WEB
https://osv.dev/vulnerability/CVE-2022-25139 WEB
https://osv.dev/vulnerability/CVE-2022-3638 WEB
https://osv.dev/vulnerability/CVE-2022-41741 WEB
https://osv.dev/vulnerability/CVE-2022-41742 WEB
https://osv.dev/vulnerability/CVE-2023-44487 WEB
https://osv.dev/vulnerability/CVE-2024-31079 WEB
https://osv.dev/vulnerability/CVE-2024-32760 WEB
https://osv.dev/vulnerability/CVE-2024-34161 WEB
https://osv.dev/vulnerability/CVE-2024-35200 WEB
https://osv.dev/vulnerability/CVE-2024-7347 WEB
https://osv.dev/vulnerability/CVE-2025-23419 WEB
https://nvd.nist.gov/vuln/detail/CVE-2017-7529 WEB
https://nvd.nist.gov/vuln/detail/CVE-2018-16845 WEB
https://nvd.nist.gov/vuln/detail/CVE-2019-20372 WEB
https://nvd.nist.gov/vuln/detail/CVE-2019-9511 WEB
https://nvd.nist.gov/vuln/detail/CVE-2019-9513 WEB
https://nvd.nist.gov/vuln/detail/CVE-2019-9516 WEB
https://nvd.nist.gov/vuln/detail/CVE-2021-23017 WEB
https://nvd.nist.gov/vuln/detail/CVE-2021-46461 WEB
https://nvd.nist.gov/vuln/detail/CVE-2021-46462 WEB
https://nvd.nist.gov/vuln/detail/CVE-2021-46463 WEB
https://nvd.nist.gov/vuln/detail/CVE-2022-25139 WEB
https://nvd.nist.gov/vuln/detail/CVE-2022-3638 WEB
https://nvd.nist.gov/vuln/detail/CVE-2022-41741 WEB
https://nvd.nist.gov/vuln/detail/CVE-2022-41742 WEB
https://nvd.nist.gov/vuln/detail/CVE-2023-44487 WEB
https://nvd.nist.gov/vuln/detail/CVE-2024-31079 WEB
https://nvd.nist.gov/vuln/detail/CVE-2024-32760 WEB
https://nvd.nist.gov/vuln/detail/CVE-2024-34161 WEB
https://nvd.nist.gov/vuln/detail/CVE-2024-35200 WEB
https://nvd.nist.gov/vuln/detail/CVE-2024-7347 WEB
https://nvd.nist.gov/vuln/detail/CVE-2025-23419 WEB

{
  "affected": [
    {
      "package": {
        "ecosystem": "CleanStart",
        "name": "nginx"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.26.3-r0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [],
  "database_specific": {},
  "details": "Multiple security vulnerabilities affect the nginx package. When multiple server blocks are configured to share the same IP address and port, an attacker can use session resumption to bypass client certificate authentication requirements on these servers. See references for individual vulnerability details.",
  "id": "CLEANSTART-2026-BA37192",
  "modified": "2026-01-29T18:58:54Z",
  "published": "2026-01-30T17:14:26.459138Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-BA37192"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2017-7529"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2018-16845"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2019-20372"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2019-9511"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2019-9513"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2019-9516"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2021-23017"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2021-46461"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2021-46462"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2021-46463"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2022-25139"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2022-3638"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2022-41741"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2022-41742"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2023-44487"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2024-31079"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2024-32760"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2024-34161"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2024-35200"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2024-7347"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2025-23419"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-7529"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-16845"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-20372"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-9511"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-9513"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-9516"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-23017"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46461"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46462"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46463"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-25139"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-3638"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-41741"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-41742"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-44487"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-31079"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-32760"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-34161"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-35200"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-7347"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-23419"
    }
  ],
  "related": [],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "When multiple server blocks are configured to share the same IP address and port, an attacker can use session resumption to bypass client certificate authentication requirements on these servers",
  "upstream": [
    "CVE-2017-7529",
    "CVE-2018-16845",
    "CVE-2019-20372",
    "CVE-2019-9511",
    "CVE-2019-9513",
    "CVE-2019-9516",
    "CVE-2021-23017",
    "CVE-2021-46461",
    "CVE-2021-46462",
    "CVE-2021-46463",
    "CVE-2022-25139",
    "CVE-2022-3638",
    "CVE-2022-41741",
    "CVE-2022-41742",
    "CVE-2023-44487",
    "CVE-2024-31079",
    "CVE-2024-32760",
    "CVE-2024-34161",
    "CVE-2024-35200",
    "CVE-2024-7347",
    "CVE-2025-23419"
  ]
}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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