Vulnerability RUSTSEC-2026-0268
Unknown
UNKNOWN RISK
Vulnerabilities without an assigned CVSS score. Severity is not determinable from available data.
1 month ago
August 20, 2026 at 12:00 PM UTC
Guest controlled-size host heap allocation through WASIp3 streams
46.0.0 - 46.0.2 and 47.0.0 - 47.0.3
46.0.0 - 46.0.2 and 47.0.0 - 47.0.3
Summary
Guest controlled-size host heap allocation through WASIp3 streams
Details
This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-x84v-gj2h-g759 For more information see the GitHub-hosted security advisory.
Related Vulnerabilities
Other vulnerabilities affecting the same packages
Unknown
1 day ago
Panic when invoking an async-lifted function via `call`
46.0.0 - 48.0.5 and 49.0.0 - 49.0.2 RUSTSEC-2026-0353
46.0.0 - 48.0.5 and 49.0.0 - 49.0.2 RUSTSEC-2026-0353
Unknown
1 day ago
Host panic when component `call_async` is cancelled under some conditions
46.0.0 - 48.0.5 and 49.0.0 - 49.0.2 RUSTSEC-2026-0354
46.0.0 - 48.0.5 and 49.0.0 - 49.0.2 RUSTSEC-2026-0354
Unknown
1 day ago
Panic viewing component model stream or future as the wrong type
46.0.0 - 48.0.5 and 49.0.0 - 49.0.2 RUSTSEC-2026-0355
46.0.0 - 48.0.5 and 49.0.0 - 49.0.2 RUSTSEC-2026-0355
Medium Risk
1 day ago
Panic on erroneous call-to-host from guest realloc call
46.0.0 - 48.0.5 and 49.0.0 - 49.0.2 RUSTSEC-2026-0356
46.0.0 - 48.0.5 and 49.0.0 - 49.0.2 RUSTSEC-2026-0356
Unknown
1 day ago
Out-of-bounds zero-length stream writes can panic
46.0.0 - 48.0.5 and 49.0.0 - 49.0.2 RUSTSEC-2026-0357
46.0.0 - 48.0.5 and 49.0.0 - 49.0.2 RUSTSEC-2026-0357
Impacted packages
Timeline
Published
1 month ago
August 20, 2026 at 12:00 PM UTC
Fixed (47.0.4)
1 month ago
August 20, 2026 at 05:08 PM UTC
Fixed (46.0.3)
1 month ago
August 20, 2026 at 05:08 PM UTC
Last Modified
2 days ago
October 12, 2026 at 06:00 PM UTC