{"id":"CVE-2026-115383","aliases":["RUSTSEC-2026-0325","GHSA-cfhf-m2cr-62wj"],"title":"Mis-typed WebAssembly tag imports can lead to GC heap corruption","summary":"Mis-typed WebAssembly tag imports can lead to GC heap corruption","severity":"medium","cvss":4.8,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H","vendor":"wasmtime","product":"wasmtime","ecosystem":"rust","affected":["wasmtime >= 49.0.0, < 49.0.2"],"patched":["wasmtime 49.0.2"],"published":"2026-10-02","updated":"2026-10-24","sourceUpdated":"2026-10-24T06:25:41Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2026-0325","references":[{"url":"https://crates.io/crates/wasmtime"},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0325.html"},{"url":"https://github.com/bytecodealliance/wasmtime/pull/14471"},{"url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-cfhf-m2cr-62wj","label":"GitHub Security Advisory (GHSA-cfhf-m2cr-62wj)"},{"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-tag-imports","label":"VulnCheck Advisory: Wasmtime 47.0.0 before 48.0.4 and 49.0.0 before 49.0.2 GC Heap Corruption via Tag Imports"}],"tags":["osv","rust","cve.org"],"epss":0.00184,"epssPercentile":0.07866,"cvssSource":"cna","cwe":["CWE-1287"],"ingestedAt":"2026-10-22T22:00:50.403Z","slug":"CVE-2026-115383","body":"## Overview\n\nThis is an entry in the RustSec database for the Wasmtime security advisory\nlocated at\nhttps://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-cfhf-m2cr-62wj\nFor more information see the GitHub-hosted security advisory.\n\n## Affected packages\n\n- `wasmtime >= 49.0.0, < 49.0.2`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `wasmtime 49.0.2`","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":26.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}