Vulnerability Database · OSS-Fuzz · Package report
wasmtime: vulnerability history, versions and safety
wasmtime is a package in the OSS-Fuzz ecosystem. Vulert records 10 vulnerabilities for it across 89 releases, from Jul 2022 to Apr 2026. Each vulnerability names the versions it affects, the fixed version to move to, and a workaround where no fix has been published.
No patched version yet — these are the ones to plan around.
See the unfixed vulnerabilities →No published version shipped hostile code.
Vulert verdict on wasmtime i
Updated on 23 Oct 2026
Careful: one of the 10 vulnerabilities Vulert records for this package has no fix yet. Plan around that one, or apply its workaround. The rest have a fixed version to move to.
What to do: Plan around the 1 vulnerability with no published fix: each lists the affected range and any workaround that reduces exposure. No fix yet: Vulert alerts you the moment one is published. Monitor it with Vulert →
- Vulnerabilities on record 10 over 3 years · 2 in the last year i
- Latest disclosure 21 Apr 2026 i
- Highest CVSS n/a i
- With no published fix 1 i
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01 Versions
Which versions are affected
Every version Vulert holds for wasmtime, newest first, with the vulnerabilities that name it. A version with a count of zero has no recorded vulnerabilities; open a version to see the vulnerabilities it is exposed to.
Newest 89 of 89 versions on record. Severity counts are the vulnerabilities recorded against that exact release.
02 Disclosure history
How often vulnerabilities are recorded
Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 2 of the 10 were recorded in the last 12 months.
Other ways into the data
03 Vulnerabilities
Recorded vulnerabilities for wasmtime
| Vulnerability | Severity | Fixed version ↓ | Disclosed ↓ |
|---|---|---|---|
| Heap-use-after-free vulnerability in wasmtime | N/A high | No fix published | 19 Jul 2022 |
| Heap-use-after-free vulnerability in wasmtime | N/A high | 2154c63de94e0372bca5a596c3eaf90147c922d1 | 19 Jul 2022 |
| Heap-use-after-free in .tmpoLlNv4 in wasmtime | N/A high | 2154c63de94e0372bca5a596c3eaf90147c922d1 | 19 Jul 2022 |
| Segv on unknown address in cranelift_filetests::function_runner::CompiledFunction::call::ha6b9162cd2eNUMBER | N/A unrated | 573ae0c60bb20e010d74ba7fd2e7e59247f3385d | 24 Aug 2022 |
| Segv on unknown address in wasmtime_runtime::traphandlers::catch_traps::call_closure::hec711b3339636b04 | N/A unrated | dde2c5a3b6ee6caa1d597da0885613d2ce6a406a | 26 Aug 2022 |
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Updated: 23/Oct/2026 · Vulnerabilities in our DB: 524315
