{
   "document": {
      "category": "csaf_security_advisory",
      "csaf_version": "2.0",
      "distribution": {
         "tlp": {
            "label": "WHITE",
            "url": "https://www.first.org/tlp/"
         }
      },
      "lang": "en",
      "notes": [
         {
            "category": "description",
            "text": "GD versions before 2.86 for Perl allow OS command injection and file overwrite via a 2-arg open() of filename arguments in _make_filehandle.  GD::Image::_make_filehandle opens a filename argument with Perl's 2-arg open(), so a filename that begins or ends with a pipe (\"| cmd\", \"cmd |\") or begins with a redirect (\"> path\", \">> path\") is run as a command or redirect rather than opened as a file. _make_filehandle is the single open path behind every filename-accepting constructor (new, newFromPng, newFromJpeg, and the rest); the in-memory *Data variants do not open a path and are unaffected.  Any caller that forwards untrusted input to one of these constructors as a pathname can run an arbitrary command or truncate a file under the process UID.",
            "title": "Vulnerability Description"
         }
      ],
      "publisher": {
         "category": "other",
         "contact_details": "gdt@cpan.org",
         "name": "giterlizzi",
         "namespace": "https://github.com/giterlizzi/"
      },
      "references": [
         {
            "category": "self",
            "summary": "CPANSA-GD-2026-11526 JSON",
            "url": "https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-gd-2026-11526.json"
         },
         {
            "category": "external",
            "summary": "https://github.com/lstein/Perl-GD/commit/67b163713c6c78dfeb693da0978ae934e5cd8210.patch",
            "url": "https://github.com/lstein/Perl-GD/commit/67b163713c6c78dfeb693da0978ae934e5cd8210.patch"
         },
         {
            "category": "external",
            "summary": "https://metacpan.org/release/RURBAN/GD-2.86/changes",
            "url": "https://metacpan.org/release/RURBAN/GD-2.86/changes"
         },
         {
            "category": "external",
            "summary": "http://www.openwall.com/lists/oss-security/2026/06/14/4",
            "url": "http://www.openwall.com/lists/oss-security/2026/06/14/4"
         },
         {
            "category": "external",
            "summary": "https://lists.debian.org/debian-lts-announce/2026/06/msg00027.html",
            "url": "https://lists.debian.org/debian-lts-announce/2026/06/msg00027.html"
         },
         {
            "category": "external",
            "summary": "CVE-2026-11526 (NVD)",
            "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-11526"
         }
      ],
      "title": "GD vulnerability",
      "tracking": {
         "current_release_date": "2026-06-14T00:00:00",
         "generator": {
            "engine": {
               "name": "CSAF Perl Toolkit",
               "version": "0.26"
            }
         },
         "id": "CPANSA-GD-2026-11526",
         "initial_release_date": "2026-06-14T00:00:00",
         "revision_history": [
            {
               "date": "2026-06-14T00:00:00",
               "number": "1",
               "summary": "First release"
            }
         ],
         "status": "final",
         "version": "1"
      }
   },
   "product_tree": {
      "branches": [
         {
            "branches": [
               {
                  "category": "product_version_range",
                  "name": "vers:cpan/<2.86",
                  "product": {
                     "name": "GD less than 2.86",
                     "product_id": "CSAFPID-0001",
                     "product_identification_helper": {
                        "purl": "pkg:cpan/GD"
                     }
                  }
               },
               {
                  "category": "product_version_range",
                  "name": "vers:cpan/>=2.86",
                  "product": {
                     "name": "GD greater than or equal 2.86",
                     "product_id": "CSAFPID-0002",
                     "product_identification_helper": {
                        "purl": "pkg:cpan/GD"
                     }
                  }
               }
            ],
            "category": "product_name",
            "name": "GD"
         }
      ]
   },
   "vulnerabilities": [
      {
         "cve": "CVE-2026-11526",
         "cwe": {
            "id": "CWE-73",
            "name": "External Control of File Name or Path"
         },
         "notes": [
            {
               "category": "description",
               "text": "GD versions before 2.86 for Perl allow OS command injection and file overwrite via a 2-arg open() of filename arguments in _make_filehandle.\n\nGD::Image::_make_filehandle opens a filename argument with Perl's 2-arg open(), so a filename that begins or ends with a pipe (\"| cmd\", \"cmd |\") or begins with a redirect (\"> path\", \">> path\") is run as a command or redirect rather than opened as a file. _make_filehandle is the single open path behind every filename-accepting constructor (new, newFromPng, newFromJpeg, and the rest); the in-memory *Data variants do not open a path and are unaffected.\n\nAny caller that forwards untrusted input to one of these constructors as a pathname can run an arbitrary command or truncate a file under the process UID.",
               "title": "Vulnerability Description"
            }
         ],
         "product_status": {
            "fixed": [
               "CSAFPID-0002"
            ],
            "known_affected": [
               "CSAFPID-0001"
            ]
         },
         "scores": [
            {
               "cvss_v3": {
                  "baseScore": 9.8,
                  "baseSeverity": "CRITICAL",
                  "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "version": "3.1"
               },
               "products": [
                  "CSAFPID-0001"
               ]
            }
         ]
      }
   ]
}