Technology · PyPI
wasmtime (PyPI) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 5 vulnerabilities in wasmtime (PyPI): 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-34983, was published on 9 April 2026.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 0
- Exploited in the wild
- 0
About wasmtime (PyPI)
Runtime for executing WebAssembly modules with an embedded interpreter.
Latest wasmtime (PyPI) vulnerabilities
- CVE-2026-34983: Bytecode Alliance Wasmtime use-after-free in Linker cloningmediumCVSS 4EPSS 0.1%
- CVE-2024-47813: Bytecode Alliance Wasmtime race condition in internal type registrylowCVSS 3.1EPSS 0.1%
- CVE-2024-30266: RUSTSEC-2024-0441 - Panic when using a dropped extenref-typed element segmentlowCVSS 3.1EPSS 0.3%
- CVE-2021-39216: RUSTSEC-2021-0110 - Multiple Vulnerabilities in WasmtimelowCVSS 3.1EPSS 0.3%
- CVE-2021-32629: RUSTSEC-2021-0067 - Memory access due to code generation flaw in Cranelift modulelowCVSS 3.1EPSS 0.5%
Most severe wasmtime (PyPI) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-34983: Bytecode Alliance Wasmtime use-after-free in Linker cloningmediumCVSS 4EPSS 0.1%
- CVE-2021-32629: RUSTSEC-2021-0067 - Memory access due to code generation flaw in Cranelift modulelowCVSS 3.1EPSS 0.5%
- CVE-2024-30266: RUSTSEC-2024-0441 - Panic when using a dropped extenref-typed element segmentlowCVSS 3.1EPSS 0.3%
- CVE-2021-39216: RUSTSEC-2021-0110 - Multiple Vulnerabilities in WasmtimelowCVSS 3.1EPSS 0.3%
- CVE-2024-47813: Bytecode Alliance Wasmtime race condition in internal type registrylowCVSS 3.1EPSS 0.1%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/pypi-wasmtime.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "wasmtime (PyPI) vulnerabilities", https://junglewise.ai/threats/technologies/pypi-wasmtime, 28 September 2026.