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osv-2026-1220
Vulnerability from osv_ossfuzz
Published
2026-08-31 00:03
Modified
2026-08-31 00:03
Summary
Use-of-uninitialized-value in str_escape
Details

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=554268877

Crash type: Use-of-uninitialized-value
Crash state:
str_escape
mrb_vm_exec
yield_with_attr
References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "fixed_range": "b41b20aa96cb0d1fbe57acf0d30d547ccf94af3b:cafbd6691d971b110dcaedf64b37833d7a4f34cf",
        "introduced_range": "65247613b9d250403a5fd0c044da4384974ddd04:1d426c50bff9a26b6b6d79199684140db2fe94b2"
      },
      "ecosystem_specific": {
        "severity": "MEDIUM"
      },
      "package": {
        "ecosystem": "OSS-Fuzz",
        "name": "mruby",
        "purl": "pkg:generic/mruby"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "18c43c2a5add8cbd91f094b08bb4fc291a019a82"
            },
            {
              "fixed": "cafbd6691d971b110dcaedf64b37833d7a4f34cf"
            }
          ],
          "repo": "https://github.com/mruby/mruby",
          "type": "GIT"
        }
      ],
      "versions": [
        "4.0.0",
        "4.0.0-rc",
        "4.0.0-rc2",
        "4.0.0-rc3",
        "4.0.0-rc4",
        "4.1.0-rc"
      ]
    }
  ],
  "details": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=554268877\n\n```\nCrash type: Use-of-uninitialized-value\nCrash state:\nstr_escape\nmrb_vm_exec\nyield_with_attr\n```\n",
  "id": "OSV-2026-1220",
  "modified": "2026-08-31T00:03:15.842196Z",
  "published": "2026-08-31T00:03:15.841689Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=554268877"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "Use-of-uninitialized-value in str_escape"
}



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