CVE-2023-33966

HIGHNVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.6 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 60% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.6
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.6Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.6
EG Score
8.6(medium)
EPSS
45.8%
KEV
Not listed

Published

May 31, 2023

Last Modified

November 21, 2024

References (4)

Affected Packages

(2 across 1 ecosystem)
crates.io(2)
PackageVulnerable rangeFixed inDependents
deno1.34.01.34.1—
deno_runtime0.114.00.115.0—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 50× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-11 08:26 UTCEPSS rescore
  2. 2026-07-11 08:25 UTCEPSS rescore
  3. 2026-07-09 19:08 UTCEPSS rescore
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  22. 2026-06-27 19:34 UTCOSV refresh
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  1. 2026-06-25 13:48 UTCEPSS rescore
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  28. 2026-06-10 22:17 UTCEPSS rescore
  29. 2026-06-10 13:21 UTCEPSS rescore
  30. 2026-06-10 06:17 UTCOSV refresh
  31. 2026-06-08 14:16 UTCEPSS rescore
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  46. 2026-06-01 13:51 UTCEPSS rescore
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  48. 2026-05-31 22:30 UTCEPSS rescore
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  51. 2026-05-29 13:43 UTCEPSS rescore
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  58. 2026-05-26 07:18 UTCEPSS rescore
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  60. 2026-05-26 07:18 UTCEPSS rescore
  61. 2026-05-25 00:15 UTCEG score recompute
  62. 2026-05-24 16:52 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-33966?
CVE-2023-33966 is a high vulnerability published on May 31, 2023. Deno is a runtime for JavaScript and TypeScript. In deno 1.34.0 and denoruntime 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…
When was CVE-2023-33966 disclosed?
CVE-2023-33966 was first published in the National Vulnerability Database on May 31, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-33966 actively exploited?
CVE-2023-33966 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 45.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-33966?
CVE-2023-33966 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2023-33966?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-33966, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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