CVE-2026-115892
- Source
- https://cve.org/CVERecord?id=CVE-2026-115892
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-115892.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-115892
- Aliases
- Published
- 2026-10-23T21:26:54Z
- Modified
- 2026-10-25T02:46:00Z
- Severity
-
- 5.7 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Wasmtime: Panic lowering a host-created component model stream into a guest that expects a different payload type
- Details
-
Wasmtime is a runtime for WebAssembly. From 46.0.0 until 48.0.7 and 49.0.4, lowering a host-created component-model stream or future into a guest can omit a required payload-type check after the value passes through guest code and returns through StreamAny, FutureAny, Val::Stream, Val::Future, or an equivalent typed reader. A malicious guest that controls exported function types or returned values can cause the host to pass the type-erased value to a guest expecting a different payload type, which panics the Wasmtime host. This issue is fixed in versions 48.0.7 and 49.0.4.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-248", "CWE-843" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115892.json" }- References
-
- https://github.com/bytecodealliance/wasmtime/releases/tag/v48.0.7
- https://github.com/bytecodealliance/wasmtime/releases/tag/v49.0.4
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115892.json
- https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-9pvw-hwfg-92h5
- https://nvd.nist.gov/vuln/detail/CVE-2026-115892
- https://github.com/bytecodealliance/wasmtime/commit/222ff3a65dab9aa7011f8c246937751a0bac5abd
- https://github.com/bytecodealliance/wasmtime/commit/48dacc76241f06088e79f3ce1b17642f2f7bf158
- https://github.com/bytecodealliance/wasmtime/commit/994549891c8a706cb4f2809f9d17b9f67b31e618
- https://github.com/bytecodealliance/wasmtime/pull/14819
- https://github.com/bytecodealliance/wasmtime/pull/14820
- https://github.com/bytecodealliance/wasmtime/pull/14827
Affected packages
Git / github.com/bytecodealliance/wasmtime
Affected ranges
- Type
- GIT
- Repo
- https://github.com/bytecodealliance/wasmtime
- Events
-
IntroducedFixedIntroducedFixedFixedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "46.0.0" }, { "fixed": "48.0.7" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "introduced": "49.0.0" }, { "fixed": "49.0.4" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "222ff3a65dab9aa7011f8c246937751a0bac5abd" } ], "source": "REFERENCES_COMMIT" }, { "range": [ { "fixed": "48dacc76241f06088e79f3ce1b17642f2f7bf158" } ], "source": "REFERENCES_COMMIT" }, { "range": [ { "fixed": "994549891c8a706cb4f2809f9d17b9f67b31e618" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v48.0.7", "range": [ { "fixed": "c6846e13f64b07b7912d372db141397058b55f99" } ], "source": "REFERENCES_TAG" }, { "original_tag": "v49.0.4", "range": [ { "fixed": "2c2970205fe05d6bbf15b9bff6f1e67874b2db5c" } ], "source": "REFERENCES_TAG" } ] }