CVE-2023-22499Network attack vector

Permission escalation via unlocked prompt streams

Published Jan 17, 2023 · Updated Mar 10, 2025

Race condition in Deno 1.9 through 1.29.2 allows context-dependent attackers to spoof interactive permission prompts through worker output. The permission prompter fails to lock standard input and output while awaiting confirmation, allowing concurrent worker output to clear and replace the displayed request. Exploitation requires a timing-sensitive Web Worker race, an attached interactive terminal, and user acceptance, which can grant permissions for an action different from the one displayed.

CVSS severity8.8
High
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in Deno 1.9 through 1.29.2 allows context-dependent attackers to spoof interactive permission prompts through worker output. The permission prompter fails to lock standard input and output while awaiting confirmation, allowing concurrent worker output to clear and replace the displayed request. Exploitation requires a timing-sensitive Web Worker race, an attached interactive terminal, and user acceptance, which can grant permissions for an action different from the one displayed.

The record

CVE
CVE-2023-22499
Published
Jan 17, 2023
Updated
Mar 10, 2025
Vendor
Deno Land Inc.
Product
Deno
Classifications
CWE-362, T1204
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 17, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 10, 2025Record 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=>= 1.9, < 1.29.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Deno Land Inc. · Denoversion=>= 1.9, < 1.29.3

Published CVSS scores

8.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1204User Execution

Public exploit references

No public exploit references are available in this record.

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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