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CVE-2023-33966

8.6 · HIGH

Deno is a runtime for JavaScript and TypeScript.

Published May 31, 2023CWE-269EPSS 0.63%

Overview

CVE-2023-33966 is a high-severity vulnerability. It was published on May 31, 2023 and has a CVSS 3.1 base score of 8.6 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Deno is a runtime for JavaScript and TypeScript. In deno 1.34.0 and deno_runtime 0.114.0, outbound HTTP requests made using the built-in `node:http` or `node:https` modules are incorrectly not checked against the network permission allow list (`--allow-net`). Dependencies relying on these built-in modules are subject to the vulnerability too. Users of Deno versions prior to 1.34.0 are unaffected. Deno Deploy users are unaffected. This problem has been patched in Deno v1.34.1 and deno_runtime 0.114.1 and all users are recommended to update to this version. No workaround is available for this issue.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/denoland/deno/releases/tag/v1.34.1GitHubgithub.com/denoland/deno/security/advisories/GHSA-vc52-gwm3-8v2fGitHubgithub.com/denoland/deno/releases/tag/v1.34.1GitHubgithub.com/denoland/deno/security/advisories/GHSA-vc52-gwm3-8v2f

How CyberStrike helps

Frequently asked questions

What is CVE-2023-33966?

CVE-2023-33966 is a high-severity vulnerability. It was published on May 31, 2023 and has a CVSS 3.1 base score of 8.6 (HIGH).

How severe is CVE-2023-33966?

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-33966?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-33966?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-33966 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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