CVE-2026-126408
- Source
- https://cve.org/CVERecord?id=CVE-2026-126408
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-126408.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-126408
- Aliases
-
- GHSA-3982-jqvv-277m
- RUSTSEC-2026-0422
- Downstream
- Published
- 2026-11-13T09:35:42Z
- Modified
- 2026-11-14T10:30:48Z
- Severity
-
- 1.0 (Low) CVSS_V4 - CVSS:4.0/AV:A/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Wasmtime 47.0.0 before 48.0.8 Denial of Service via TypedFunc Type-Check Panic
- Details
-
Wasmtime 47.0.0 before 48.0.8, 49.0.0 before 49.0.5, and 50.0.0 before 50.0.1 contains an insufficient type-check in the TypedFunc embedder API for I31, Option, and Option parameter or result types, reaching an unreachable!() path. A malicious guest module exporting a function that uses another anyref-hierarchy type can panic the host embedding, causing denial of service.
- Database specific
{ "cna_assigner": "VulnCheck", "cwe_ids": [ "CWE-617" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126408.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126408.json
- https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-3982-jqvv-277m
- https://nvd.nist.gov/vuln/detail/CVE-2026-126408
- https://www.vulncheck.com/advisories/wasmtime-47.0.0-before-48.0.8-denial-of-service-via-typedfunc-type-check-panic
Affected packages
Git / github.com/bytecodealliance/wasmtime
Affected ranges
- Type
- GIT
- Repo
- https://github.com/bytecodealliance/wasmtime
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "47.0.0" }, { "fixed": "48.0.8" } ], "source": "AFFECTED_FIELD", "strategy": "StandardRange" }, { "range": [ { "introduced": "49.0.0" }, { "fixed": "49.0.5" } ], "source": "AFFECTED_FIELD", "strategy": "StandardRange" }, { "range": [ { "introduced": "50.0.0" }, { "fixed": "50.0.1" } ], "source": "AFFECTED_FIELD", "strategy": "StandardRange" } ] }