CVE-2023-28445

CRITICALNVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.9 under NVD CVSS v3. EPSS exploit probability: 0.8%, top 26% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.9
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.9Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.9
EG Score
9.9(medium)
EPSS
57.8%
KEV
Not listed

Published

March 24, 2023

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Jul 6, 2026
Patch available. Sources: github_pr, github_release, github.
github Patch Available

Improper handling of resizable ArrayBuffer in async built-in functions · Advisory · denoland/deno · GitHub

https://github.com/denoland/deno/security/advisories/GHSA-c25x-cm9x-qqgx
github_release Patch Available

v1.32.1

Patch available: denoland/deno v1.32.1

https://github.com/denoland/deno/releases/tag/v1.32.1
github_pr

fix: disable resizable ArrayBuffer and growable SharedArrayBuffer

Fix merged in denoland/deno PR #18395 on 2023-03-23 — awaiting tagged release

https://github.com/denoland/deno/pull/18395

Affected Packages

(3 across 1 ecosystem)
crates.io(3)
PackageVulnerable rangeFixed inDependents
Deno1.32.01.32.1—
deno_runtime0.102.00.103.0—
serde_v80.87.00.88.0—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-11 08:25 UTCEPSS rescore
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  19. 2026-06-28 02:34 UTCOSV refresh
  20. 2026-06-27 03:07 UTCEPSS rescore
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  1. 2026-06-23 21:31 UTCEPSS rescore
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  10. 2026-06-18 17:51 UTCEPSS rescore
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  22. 2026-06-10 22:17 UTCEPSS rescore
  23. 2026-06-10 13:21 UTCEPSS rescore
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  25. 2026-06-10 13:17 UTCOSV refresh
  26. 2026-06-08 14:15 UTCEPSS rescore
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  28. 2026-06-07 15:23 UTCEPSS rescore
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  30. 2026-06-06 13:46 UTCEPSS rescore
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  42. 2026-05-31 22:29 UTCEPSS rescore
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  45. 2026-05-31 00:15 UTCEPSS rescore
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  47. 2026-05-29 13:43 UTCEPSS rescore
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  49. 2026-05-28 13:43 UTCEPSS rescore
  50. 2026-05-27 13:39 UTCEPSS rescore
  51. 2026-05-27 13:39 UTCEPSS rescore
  52. 2026-05-26 13:43 UTCEPSS rescore
  53. 2026-05-26 13:43 UTCEPSS rescore
  54. 2026-05-25 04:43 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-28445?
CVE-2023-28445 is a critical vulnerability published on March 24, 2023. 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…
When was CVE-2023-28445 disclosed?
CVE-2023-28445 was first published in the National Vulnerability Database on March 24, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-28445 actively exploited?
CVE-2023-28445 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 57.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-28445?
CVE-2023-28445 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2023-28445?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-28445, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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