CVE-2026-115387
Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 before 49.0.1 contains a denial of service vulnerability in wasmtime-wasi that allows guest WASI programs to panic the host via overflowing filesystem timestamps. Attackers can pass atim or mtim values whose sub-second field overflows the seconds field to path_filestat_set_times, fd_filestat_set_times, set-times, or set-times-at, crashing the host.
- Score
- CVSS 4.0 6.9 Medium
- Status
- Deferred - disclosure@vulncheck.com
- Published
- 2026-10-22
- Last modified
- 2026-10-22
- Weaknesses
- CWE-190
Affected products
References
- https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-j2g9-4prp-pf6h
- https://www.vulncheck.com/advisories/wasmtime-before-36.0.16-37.0.0-before-48.0.3-and-49.0.0-before-49.0.1-host-panic-v…
