CVE-2023-39333
CVE-2023-39333 is a medium-severity vulnerability with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- EPSS exploit prediction: 1% (57th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2023-43064
- Weakness: CWE-94
- Published:
- Last modified:
Description
Maliciously crafted export names in an imported WebAssembly module can inject JavaScript code. The injected code may be able to access data and functions that the WebAssembly module itself does not have access to, similar to as if the WebAssembly module was a JavaScript module. This vulnerability affects users of any active release line of Node.js. The vulnerable feature is only available if Node.js is started with the `--experimental-wasm-modules` command line option.
Frequently asked questions
- What is CVE-2023-39333?
- Maliciously crafted export names in an imported WebAssembly module can inject JavaScript code. The injected code may be able to access data and functions that the WebAssembly module itself does not have access to, similar to as if the WebAssembly module was a JavaScript module. This vulnerability affects users of any active release line of Node.js. The vulnerable feature is only available if Node.js is started with the `--experimental-wasm-modules` command line option.
- How severe is CVE-2023-39333?
- CVE-2023-39333 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
- Is CVE-2023-39333 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2023-39333?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2023-39333 have an EU (EUVD) identifier?
- Yes. CVE-2023-39333 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-43064.
- When was CVE-2023-39333 published?
- CVE-2023-39333 was published on 2024-09-07 and last updated on 2026-06-17.
References
- https://nodejs.org/en/blog/vulnerability/october-2023-security-releases
- https://security.netapp.com/advisory/ntap-20240808-0004/
- https://security.netapp.com/advisory/ntap-20241004-0006/
- https://security.netapp.com/advisory/ntap-20241108-0002/
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