CVE-2026-115387RUSTSEC-2026-0314GHSA-J2G9-4PRP-PF6H
Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 before 49.0.1 Host Panic via WASI Filesystem Timestamp Overflow
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 36.0.16, 48.0.3, 49.0.1
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- bytecodealliance wasmtime
fixed in 36.0.16; From 37.0.0 · fixed in 48.0.3; From 49.0.0 · fixed in 49.0.1
- wasmtime-wasicrates.io
From 0.0.0-0 · fixed in 36.0.16; From 37.0.0 · fixed in 48.0.3; From 49.0.0 · fixed in 49.0.1