CVE-2023-42276

hutool Buffer Overflow vulnerability

9.8 Critical

hutool v5.8.21 was discovered to contain a buffer overflow via the component jsonArray.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.91%Up 0.9 points since Sep 9, 2023

What each source reports

NVD Score used 9.8

hutool v5.8.21 was discovered to contain a buffer overflow via the component jsonArray.

Record: CVE-2023-42276
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

CVE List No score

hutool v5.8.21 was discovered to contain a buffer overflow via the component jsonArray.

Record: CVE-2023-42276
Updated: 2026-11-02

EUVDEUVD-2023-2592 No score

hutool v5.8.21 was discovered to contain a buffer overflow via the component jsonArray.

Record: EUVD-2023-2592
Updated: 2026-11-03

GitHub AdvisoriesGHSA-rxgf-r843-g53h 9.8

hutool Buffer Overflow vulnerability

hutool v5.8.21 was discovered to contain a buffer overflow via the component jsonArray.

Record: GHSA-rxgf-r843-g53h
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

OSVGHSA-rxgf-r843-g53h 9.8

hutool Buffer Overflow vulnerability

hutool v5.8.21 was discovered to contain a buffer overflow via the component jsonArray.

Record: GHSA-rxgf-r843-g53h
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

OSV No score

hutool v5.8.21 was discovered to contain a buffer overflow via the component jsonArray.

Record: CVE-2023-42276
Updated: 2026-11-02

Affected products

hutool

Affected packages

Affected packages
Package	Affected	Fixed
`cn.hutool:hutool-core` Maven	through 5.8.21	None known
`cn.hutool:hutool-json` Maven	through 5.8.21	None known
`cn.hutool:hutool-core` Maven	through 5.8.21, plus listed versions 4.0.04.0.14.0.104.0.114.0.12 Show 45 moreShow less 4.0.24.0.34.0.44.0.54.0.64.0.74.0.84.0.94.1.04.1.14.1.104.1.114.1.124.1.134.1.144.1.154.1.164.1.174.1.184.1.194.1.24.1.204.1.214.1.34.1.44.1.54.1.64.1.74.1.84.1.94.2.14.3.04.3.14.3.24.4.04.4.14.4.24.4.34.4.44.4.54.5.04.5.14.5.104.5.114.5.12	None known
`cn.hutool:hutool-json` Maven	through 5.8.21, plus listed versions 4.0.04.0.14.0.104.0.114.0.12 Show 45 moreShow less 4.0.24.0.34.0.44.0.54.0.64.0.74.0.84.0.94.1.04.1.14.1.104.1.114.1.124.1.134.1.144.1.154.1.164.1.174.1.184.1.194.1.24.1.204.1.214.1.34.1.44.1.54.1.64.1.74.1.84.1.94.2.14.3.04.3.14.3.24.4.04.4.14.4.24.4.34.4.44.4.54.5.04.5.14.5.104.5.114.5.12	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-42276 is a critical vulnerability (CVSS 9.8) in Hutool, published September 8, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.91%, the 60th percentile. No source names a fixed version.

References

This page doesn't list everything

Left out here: 274 versions. The JSON record has them.