Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The wasmtime crate (Rust) versions before 24.0.6, 25.0.0 through 36.0.5, 37.0.0 through 40.0.3, and 41.0.0 through 41.0.3 are affected. A guest module running inside the runtime can exhaust host resources through WASI implementations, which the source describes as guest-controlled resource exhaustion. The source gives few details on the exact trigger or impact. Upgrade to 24.0.6, 36.0.6, 40.0.4, or 41.0.4, depending on the release line in use.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.9 | Medium | 4.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0040, the 34th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:24 UTC First seen by agentprime
- 31 Oct 2026, 14:24 UTC Confirmed by OSV