{
  "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-2026-48979",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-48979",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-06-17T20:43:25.971Z",
    "updatedAt": "2026-06-18T13:11:32.959Z",
    "importedAt": "2026-10-24T01:58:14.884Z",
    "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": "PHP Standard Library: HTTP/2 server-side missing content-length validation enables request smuggling",
      "summary": "PHP Standard Library (PSL) is set of APIs covering async, collections, networking, I/O, cryptography, terminal UI, etc. In versions 6.1.0, 6.1.1 and 6.2.0, the Psl\\H2\\ServerConnection does not validate that the total bytes received in DATA frames match the content-length header declared in the HEADERS frame, allowing request smuggling. This is in violation of RFC 9113 §8.1.1. A malicious client is able to send more DATA bytes than declared, smuggling additional content past application-level size limits and send fewer DATA bytes than declared and close the stream early, causing applications that trust the declared length to behave incorrectly.\nThe vulnerability is only reachable for consumers using Psl\\H2\\ServerConnection directly to accept untrusted client traffic. Consumers of documented high-level PSL APIs are not affected. This issue has been fixed in versions 6.1.2 and 6.2.1.",
      "affected": [
        {
          "vendor": "php-standard-library",
          "product": "php-standard-library",
          "versions": [
            {
              "version": ">= 6.1.0, < 6.1.2",
              "status": "affected"
            },
            {
              "version": ">= 6.2.0, < 6.2.1",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "php-standard-library",
          "product": "php-standard-library/h2",
          "versions": [
            {
              "version": ">= 6.1.0, < 6.1.2",
              "status": "affected"
            },
            {
              "version": ">= 6.2.0, < 6.2.1",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}