{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
                "range": [
                  {
                    "introduced": "8.2.0"
                  },
                  {
                    "fixed": "8.2.31"
                  }
                ],
                "source": "CPE_RANGE"
              },
              {
                "cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
                "range": [
                  {
                    "introduced": "8.3.0"
                  },
                  {
                    "fixed": "8.3.31"
                  }
                ],
                "source": "CPE_RANGE"
              },
              {
                "cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
                "range": [
                  {
                    "introduced": "8.4.0"
                  },
                  {
                    "fixed": "8.4.21"
                  }
                ],
                "source": "CPE_RANGE"
              },
              {
                "cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
                "range": [
                  {
                    "introduced": "8.5.0"
                  },
                  {
                    "fixed": "8.5.6"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          },
          "events": [
            {
              "introduced": "70ee6c20ad97e02c2b8098aeea96fefbbc3ac5c2"
            },
            {
              "fixed": "48ed910b47285a1377f93f92557b8e401623dce0"
            },
            {
              "introduced": "d26068059e83fe40de3430a512471d194119bee0"
            },
            {
              "fixed": "dff62b8bdb21a5d610ef08e4291277724724c4d7"
            },
            {
              "introduced": "b437f2b32eb364c9496d24abcc734272e5c9c980"
            },
            {
              "fixed": "7a64ae0507799547fbbd39b067bd3dd2c35e8fec"
            },
            {
              "introduced": "685e99655ae97c667950f7f7d176985958718f56"
            },
            {
              "fixed": "fcc29c8d6d6ee6f5ba2d941f0a2a6ea6aa6ee633"
            }
          ],
          "repo": "https://github.com/php/php-src",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-wm6j-2649-pv75"
  ],
  "database_specific": {
    "cna_assigner": "php",
    "cwe_ids": [
      "CWE-476"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7259.json"
  },
  "details": "In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, a mismatch between encoding lists in Oniguruma and mbfl leads to  a NULL pointer dereference, resulting in a segmentation fault and denial of service. The vulnerability is exploitable when user-controlled input can influence the encoding passed to mb_regex_encoding().",
  "id": "CVE-2026-7259",
  "modified": "2026-11-11T02:31:17.241468357Z",
  "published": "2026-05-10T04:13:26.766Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7259.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/php/php-src/security/advisories/GHSA-wm6j-2649-pv75"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-7259"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/AU:Y/U:Amber",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Null pointer dereference in php_mb_check_encoding() via mb_ereg_search_init()"
}