CVE-2023-28445

Name: CVE-2023-28445
Creator: NVD / NIST
Published: 2023-03-24T00:15:15.653+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.97%

Last modified Jun 17, 2026

CVE-2023-28445 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Deno is a runtime for JavaScript and TypeScript that uses V8 and is built in Rust. Resizable ArrayBuffers passed to asynchronous functions that are shrunk during the asynchronous operation could result in an out-of-bound read/write. EPSS estimates a 0.97% chance of exploitation in the next 30 days.

Description

Deno is a runtime for JavaScript and TypeScript that uses V8 and is built in Rust. Resizable ArrayBuffers passed to asynchronous functions that are shrunk during the asynchronous operation could result in an out-of-bound read/write. It is unlikely that this has been exploited in the wild, as the only version affected is Deno 1.32.0. Deno Deploy users are not affected. The problem has been resolved by disabling resizable ArrayBuffers temporarily in Deno 1.32.1. Deno 1.32.2 will re-enable resizable ArrayBuffers with a proper fix. As a workaround, run with `--v8-flags=--no-harmony-rab-gsab` to disable resizable ArrayBuffers.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.97%

57.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Deno	Deno	1.32.0
Deno	Deno Runtime	0.102.0
Deno	Serde V8	0.87.0

References

https://github.com/denoland/deno/pull/18395Patch, Vendor Advisory
https://github.com/denoland/deno/releases/tag/v1.32.1Patch, Release Notes
https://github.com/denoland/deno/security/advisories/GHSA-c25x-cm9x-qqgxMitigation, Vendor Advisory
https://github.com/denoland/deno/pull/18395Patch, Vendor Advisory
https://github.com/denoland/deno/releases/tag/v1.32.1Patch, Release Notes
https://github.com/denoland/deno/security/advisories/GHSA-c25x-cm9x-qqgxMitigation, Vendor Advisory

Timeline

Published: Mar 24, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-28445?

How severe is CVE-2023-28445?

CVE-2023-28445 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.97% probability of exploitation in the next 30 days.

How do I fix CVE-2023-28445?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-28445?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST