5.5
MEDIUM CVSS 3.1
CVE-2024-30266
Wasmtime vulnerable to panic when using a dropped extenref-typed element segment
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.

INFO

Published Date :

April 4, 2024, 4:15 p.m.

Last Modified :

Sept. 2, 2025, 2:46 p.m.

Remotely Exploit :

No
Affected Products

The following products are affected by CVE-2024-30266 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Bytecodealliance wasmtime
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 LOW [email protected]
CVSS 3.1 MEDIUM [email protected]
Solution
Update Wasmtime to resolve a host runtime panic vulnerability.
  • Update Wasmtime to version 19.0.1.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2024-30266 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2024-30266 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2024-30266 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2024-30266 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Sep. 02, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    Added CPE Configuration OR *cpe:2.3:a:bytecodealliance:wasmtime:19.0.0:*:*:*:*:rust:*:*
    Added Reference Type CVE: https://github.com/bytecodealliance/wasmtime/commit/7f57d0bb0948fa56cc950278d0db230ed10e8664 Types: Patch
    Added Reference Type GitHub, Inc.: https://github.com/bytecodealliance/wasmtime/commit/7f57d0bb0948fa56cc950278d0db230ed10e8664 Types: Patch
    Added Reference Type CVE: https://github.com/bytecodealliance/wasmtime/issues/8281 Types: Exploit, Issue Tracking
    Added Reference Type GitHub, Inc.: https://github.com/bytecodealliance/wasmtime/issues/8281 Types: Exploit, Issue Tracking
    Added Reference Type CVE: https://github.com/bytecodealliance/wasmtime/pull/8018 Types: Patch
    Added Reference Type GitHub, Inc.: https://github.com/bytecodealliance/wasmtime/pull/8018 Types: Patch
    Added Reference Type CVE: https://github.com/bytecodealliance/wasmtime/pull/8283 Types: Patch
    Added Reference Type GitHub, Inc.: https://github.com/bytecodealliance/wasmtime/pull/8283 Types: Patch
    Added Reference Type CVE: https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-75hq-h6g9-h4q5 Types: Mitigation, Third Party Advisory
    Added Reference Type GitHub, Inc.: https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-75hq-h6g9-h4q5 Types: Mitigation, Third Party Advisory
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://github.com/bytecodealliance/wasmtime/commit/7f57d0bb0948fa56cc950278d0db230ed10e8664
    Added Reference https://github.com/bytecodealliance/wasmtime/issues/8281
    Added Reference https://github.com/bytecodealliance/wasmtime/pull/8018
    Added Reference https://github.com/bytecodealliance/wasmtime/pull/8283
    Added Reference https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-75hq-h6g9-h4q5
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Received by [email protected]

    Apr. 04, 2024

    Action Type Old Value New Value
    Added 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.
    Added Reference GitHub, Inc. https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-75hq-h6g9-h4q5 [No types assigned]
    Added Reference GitHub, Inc. https://github.com/bytecodealliance/wasmtime/issues/8281 [No types assigned]
    Added Reference GitHub, Inc. https://github.com/bytecodealliance/wasmtime/pull/8018 [No types assigned]
    Added Reference GitHub, Inc. https://github.com/bytecodealliance/wasmtime/pull/8283 [No types assigned]
    Added Reference GitHub, Inc. https://github.com/bytecodealliance/wasmtime/commit/7f57d0bb0948fa56cc950278d0db230ed10e8664 [No types assigned]
    Added CWE GitHub, Inc. CWE-843
    Added CVSS V3.1 GitHub, Inc. AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 5.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact