rust-wasmtime: Wasmtime before 36.0.17, 37.0.0 before 48.0.4, and 49.0.0 before 49.0.2 contains an information disclosure vulnerabil...
CVE-2026-115386 is fixed in rust-wasmtime on 1 platform by DEBIAN-CVE-2026-115386 (version 36.0.20+dfsg-1), released November 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Wasmtime before 36.0.17, 37.0.0 before 48.0.4, and 49.0.0 before 49.0.2 contains an information disclosure vulnerability in the WASIp1 fd_readdir implementation that copies uninitialized struct padding into guest memory. Guests with a preopened directory can list entries to receive three bytes of leftover host stack or heap memory per directory entry.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| rust-wasmtime · Debian 14 | 36.0.20+dfsg-1 | DEBIAN-CVE-2026-115386 | Nov 3, 2026 |
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