CVE-2023-33966

criticalpriority · track · 39OT risk · elevatedEPSS 0.006 · 50 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.63% (50th) EPSS

CVSS 9.8 · critical

Is it mine?

6 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.6–9.8

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.18.6highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:Nsecondary · ENISA EU

v3.18.6highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:Nsecondary · security-advisories@github.comexploitability 3.9 · impact 4

v3.18.6highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:Nsecondary · OSV

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-276USprimaryCWE-269USCWE-269USCWE-276US

affected products (6)

Products and version ranges known to be affected.

denoland deno≤ deno = 1.34.0enisa_euvdEU
denoland deno≤ deno_runtime = 0.114.0enisa_euvdEU
deno deno= 1.34.0nvdUScpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*
deno deno runtime= 0.114.0nvdUScpe:2.3:a:deno:deno_runtime:*:*:*:*:*:*:*:*
crates.io deno1.34.0 → 1.34.1osvUSpkg:cargo/deno
crates.io deno_runtime0.114.0 → 0.115.0osvUSpkg:cargo/deno_runtime

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-vc52-gwm3-8v2fMissing "--allow-net" permission check for built-in Node modules2023-05-31ghsa · osvUS
### Impact 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. ### Patches This problem has been patched in Deno v1.34.1 and all users are recommended to update to this version. ### Workarounds No workaround is available for this issue.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2023-05-31modified 2026-06-17

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references (7)

External citations — patches, advisories, analysis.

scry

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