CVE-2023-33966

Deno missing "--allow-net" permission check for built-in Node modules

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.

Categories

8.6
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.14%
Vendor Advisory github.com
Affected: denoland deno
Published at:
Updated at:

References

Link Tags
https://github.com/denoland/deno/security/advisories/GHSA-vc52-gwm3-8v2f vendor advisory
https://github.com/denoland/deno/releases/tag/v1.34.1 release notes

Frequently Asked Questions

What is the severity of CVE-2023-33966?
CVE-2023-33966 has been scored as a high severity vulnerability.
How to fix CVE-2023-33966?
To fix CVE-2023-33966, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-33966 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-33966 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-33966?
CVE-2023-33966 affects denoland deno.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.