{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2023-29530",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-29530",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2023-04-24T19:34:40.294Z",
    "updatedAt": "2025-02-13T16:49:22.272Z",
    "importedAt": "2026-10-24T01:56:53.804Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Laminas Diactoros vulnerable to HTTP Multiline Header Termination",
      "summary": "Laminas Diactoros provides PSR HTTP Message implementations. In versions 2.18.0 and prior, 2.19.0, 2.20.0, 2.21.0, 2.22.0, 2.23.0, 2.24.0, and 2.25.0, users who create HTTP requests or responses using laminas/laminas-diactoros, when providing a newline at the start or end of a header key or value, can cause an invalid message. This can lead to denial of service vectors or application errors. The problem has been patched in following versions 2.18.1, 2.19.1, 2.20.1, 2.21.1, 2.22.1, 2.23.1, 2.24.1, and 2.25.1. As a workaround, validate HTTP header keys and/or values, and if using user-supplied values, filter them to strip off leading or trailing newline characters before calling `withHeader()`.",
      "affected": [
        {
          "vendor": "laminas",
          "product": "laminas-diactoros",
          "versions": [
            {
              "version": "< 2.18.1",
              "status": "affected"
            },
            {
              "version": "= 2.19.0",
              "status": "affected"
            },
            {
              "version": "= 2.20.0",
              "status": "affected"
            },
            {
              "version": "= 2.21.0",
              "status": "affected"
            },
            {
              "version": "= 2.22.0",
              "status": "affected"
            },
            {
              "version": "= 2.23.0",
              "status": "affected"
            },
            {
              "version": "= 2.24.0",
              "status": "affected"
            },
            {
              "version": "= 2.25.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}