{"id":"OSV-2026-1220","summary":"Use-of-uninitialized-value in str_escape","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","modified":"2026-09-11T14:26:10.616202Z","published":"2026-08-31T00:03:15.841689Z","references":[{"type":"REPORT","url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=554268877"}],"affected":[{"package":{"name":"mruby","ecosystem":"OSS-Fuzz","purl":"pkg:generic/mruby"},"ranges":[{"type":"GIT","repo":"https://github.com/mruby/mruby","events":[{"introduced":"18c43c2a5add8cbd91f094b08bb4fc291a019a82"},{"fixed":"cafbd6691d971b110dcaedf64b37833d7a4f34cf"}]}],"versions":["4.0.0","4.0.0-rc","4.0.0-rc2","4.0.0-rc3","4.0.0-rc4","4.1.0-rc","4.1.0-rc2"],"ecosystem_specific":{"severity":"MEDIUM"},"database_specific":{"introduced_range":"65247613b9d250403a5fd0c044da4384974ddd04:1d426c50bff9a26b6b6d79199684140db2fe94b2","source":"https://github.com/google/oss-fuzz-vulns/blob/main/vulns/mruby/OSV-2026-1220.yaml","fixed_range":"b41b20aa96cb0d1fbe57acf0d30d547ccf94af3b:cafbd6691d971b110dcaedf64b37833d7a4f34cf"}}],"schema_version":"1.9.0"}