What is GHSA-6862-c5q5-q6rc?

GHSA-6862-c5q5-q6rc is a security advisory published by GitHub Security Advisories with Medium severity. Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a leftover assertion in component...

Which CVE IDs does GHSA-6862-c5q5-q6rc cover?

GHSA-6862-c5q5-q6rc covers the following CVE IDs: CVE-2026-119139. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-6862-c5q5-q6rc?

GHSA-6862-c5q5-q6rc has a CVSS v3 base score of 4.8, published by GitHub Security Advisories.

GHSA-6862-c5q5-q6rcMediumCVSS 4.8

Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a leftover assertion in component...

Vendor

GitHub Security Advisories

Published

October 29, 2026

Last Modified

October 29, 2026

🔗 CVE IDs covered (1)

CVE-2026-119139 →

📋 Description

Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a leftover assertion in component::Func::call that rejects guest exports using the async ABI option. An attacker who supplies a component with an async-lifted export can crash the host process when an embedder invokes that export through Func::call.

🔗 References (4)

https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-m6w2-jwq2-cv2c
https://nvd.nist.gov/vuln/detail/CVE-2026-119139
https://www.vulncheck.com/advisories/wasmtime-46.0.0-before-48.0.6-and-49.0.0-before-49.0.3-host-panic-via-func-call
https://github.com/advisories/GHSA-6862-c5q5-q6rc