What’s Vulnerable › Vulnerabilities

CVE-2024-30266: Wasmtime vulnerable to panic when using a dropped extenref-typed element segment

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-04-04 · updated 2026-06-17
• Weakness: CWE-843

Description

wasmtime is a runtime for WebAssembly. The 19.0.0 release of Wasmtime contains a regression introduced during its development which can lead to a guest WebAssembly module causing a panic in the host runtime. A valid WebAssembly module, when executed at runtime, may cause this panic. This vulnerability has been patched in version 19.0.1.

Affected products

• bytecodealliance wasmtime: 19.0.0

References

• https://github.com/bytecodealliance/wasmtime/commit/7f57d0bb0948fa56cc950278d0db230ed10e8664
• https://github.com/bytecodealliance/wasmtime/issues/8281
• https://github.com/bytecodealliance/wasmtime/pull/8018
• https://github.com/bytecodealliance/wasmtime/pull/8283
• https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-75hq-h6g9-h4q5
• https://github.com/bytecodealliance/wasmtime/commit/7f57d0bb0948fa56cc950278d0db230ed10e8664
• https://github.com/bytecodealliance/wasmtime/issues/8281
• https://github.com/bytecodealliance/wasmtime/pull/8018
• https://github.com/bytecodealliance/wasmtime/pull/8283
• https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-75hq-h6g9-h4q5

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