CVE-2024-32477

7.7 HIGH 0.3% exploit odds Fix listed

What it is

Deno is a JavaScript, TypeScript, and WebAssembly runtime with secure defaults. By using ANSI escape sequences and a race between `libc::tcflush(0, libc::TCIFLUSH)` and reading standard input, it's possible to manipulate the permission prompt and force it to allow an unsafe action regardless of the user input. Some ANSI escape sequences act as a info request to the master terminal emulator and the terminal emulator sends back the reply in the PTY channel. standard streams also use this channel to send and get data. For example the `\033[6n` sequence requests the current cursor position. These sequences allow us to append data to the standard input of Deno. This vulnerability allows an attacker to bypass Deno permission policy. This vulnerability is fixed in 1.42.2.

At a glance

Exploitability: Can be exploited locally on the machine without logging in. High risk of data exposure, data tampering.
Exploit odds: 0.3% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2024-04-18 20:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 07:29 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.3% in the next 30 days (EPSS).
Severity: 7.7 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2024-04-18 20:15 UTC
Last modified: 2026-06-17 07:29 UTC
Exploit probability: 0.3% · EPSS, next 30 days
Weakness: CWE-78 · OS command injection
Record status: Analyzed

Affected

Deno < 1.42.2

Attack profile CVSS 3.1 · 7.7

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: None

Raw vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Is it in your code?

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Fix and advisories

References

NVD record · CVE.org record