CVE-2023-51661

Name: CVE-2023-51661
Creator: NVD / NIST
Published: 2023-12-22T15:15:08.377+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 0.60%

Last modified Jun 17, 2026

CVE-2023-51661 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. Wasmer is a WebAssembly runtime that enables containers to run anywhere: from Desktop to the Cloud, Edge and even the browser. Wasm programs can access the filesystem outside of the sandbox. EPSS estimates a 0.60% chance of exploitation in the next 30 days.

Description

Wasmer is a WebAssembly runtime that enables containers to run anywhere: from Desktop to the Cloud, Edge and even the browser. Wasm programs can access the filesystem outside of the sandbox. Service providers running untrusted Wasm code on Wasmer can unexpectedly expose the host filesystem. This vulnerability has been patched in version 4.2.4.

Metrics

CVSS 3.1

8.6/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

EPSS Probability

0.60%

43.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Wasmer	Wasmer	>= 3.0.0, < 4.2.4

References

https://github.com/wasmerio/wasmer/commit/4d63febf9d8b257b0531963b85df48d45d0dbf3cPatch
https://github.com/wasmerio/wasmer/issues/4267Issue Tracking
https://github.com/wasmerio/wasmer/security/advisories/GHSA-4mq4-7rw3-vm5jExploit, Vendor Advisory
https://github.com/wasmerio/wasmer/commit/4d63febf9d8b257b0531963b85df48d45d0dbf3cPatch
https://github.com/wasmerio/wasmer/issues/4267Issue Tracking
https://github.com/wasmerio/wasmer/security/advisories/GHSA-4mq4-7rw3-vm5jExploit, Vendor Advisory

Timeline

Published: Dec 22, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-51661?

How severe is CVE-2023-51661?

CVE-2023-51661 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 0.60% probability of exploitation in the next 30 days.

How do I fix CVE-2023-51661?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-51661?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST