CVE-2024-27933Public exploit

Arbitrary code execution via premature descriptor close

Published Mar 6, 2024 · Updated Aug 2, 2024

Permission bypass in Deno 1.39.0 allows local users controlling executed code to run arbitrary code outside the runtime sandbox. op_node_ipc_pipe() wraps an unvalidated raw IPC descriptor in IpcJsonStreamResource, whose close operation also closes that descriptor. Control of code running in the runtime is required; closing standard input and error permits descriptor reuse and suppresses permission prompts.

CVSS severity8.8
High
EPSS probability2.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Permission bypass in Deno 1.39.0 allows local users controlling executed code to run arbitrary code outside the runtime sandbox. op_node_ipc_pipe() wraps an unvalidated raw IPC descriptor in IpcJsonStreamResource, whose close operation also closes that descriptor. Control of code running in the runtime is required; closing standard input and error permits descriptor reuse and suppresses permission prompts.

The record

CVE
CVE-2024-27933
Published
Mar 6, 2024
Updated
Aug 2, 2024
Vendor
Deno Land Inc.
Product
Deno
Classifications
CWE-863, T1068
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Mar 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion== 1.39.0
  2. Affected versionversion=1.39.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Deno Land Inc. · Denoversion== 1.39.0; version=1.39.0

Published CVSS scores

8.8NISTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
8.2GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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