{"id":"CVE-2026-115379","summary":"Wasmtime 47.0.0 before 48.0.4 and 49.0.0 before 49.0.2 GC Heap Corruption via try_call","details":"Wasmtime 47.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a missing GC rooting vulnerability that leaves references live across try_call unrooted when compiling Wasm modules. Attackers can supply Wasm modules whose callee triggers garbage collection, leaving stale or dangling references that cause GC heap corruption or incorrect execution.","aliases":["GHSA-hw8m-q44c-ggrf","RUSTSEC-2026-0326"],"modified":"2026-11-05T21:15:43.516770645Z","published":"2026-10-22T19:13:47.737Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115379.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-416"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115379.json"},{"type":"ADVISORY","url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-hw8m-q44c-ggrf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115379"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/wasmtime-47.0.0-before-48.0.4-and-49.0.0-before-49.0.2-gc-heap-corruption-via-try-call"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/bytecodealliance/wasmtime","events":[{"introduced":"39d67168cdb6911ffdc961381314b6fed62e3c93"},{"fixed":"d02ffd202850007ea953224f589a569e8830eb6c"},{"introduced":"17830bd3c0331d920a8aa38846eebc4d46d98c23"},{"fixed":"3c8a3e79aa3188a1a12b3aebbaa097abccceac92"}],"database_specific":{"extracted_events":[{"range":[{"introduced":"47.0.0"},{"fixed":"48.0.4"}],"source":"AFFECTED_FIELD","strategy":"StandardRange"},{"source":"AFFECTED_FIELD","strategy":"StandardRange","range":[{"introduced":"49.0.0"},{"fixed":"49.0.2"}]}]}}],"versions":["v49.0.1","v49.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-115379.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}