CVE-2026-115385

CVSS 6.9 (medium) · published 2026-10-22

Wasmtime 46.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a denial of service vulnerability in the wasmtime-wasi WASIp3 implementation that allows guests to abort the Unix host process. Guests with mutable preopened directory access can call set-times or set-times-at with negative seconds timestamps before the epoch, triggering an assertion failure that crashes the host.

Weakness: CWE-754

Source: NVD CVE-2026-115385

References

• https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-mr2v-56j5-cmfc
• https://www.vulncheck.com/advisories/wasmtime-46.0.0-before-48.0.4-and-49.0.0-before-49.0.2-host-panic-via-wasip3-timestamps

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