CVE-2023-42276

CRITICALNVD 9.89.8—Elevated

9.8

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

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 43.5%
KEV: Not listed

Published

September 8, 2023

Last Modified

September 12, 2025

References (2)

cve@mitrehttps://github.com/dromara/hutool/issues/3286
af854a3a-2127-422b-91ae-364da2661108https://github.com/dromara/hutool/issues/3286

Patch Availability(2)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
maven	cn.hutool:hutool-core	—	ghsa
maven	cn.hutool:hutool-json	—	ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(2 across 1 ecosystem)

Maven(2)

Package	Vulnerable range	Fixed in	Dependents
cn.hutool:hutool-core	4.0.0 ... 5.8.9 (188 versions)	—	—
cn.hutool:hutool-json	4.0.0 ... 5.8.9 (188 versions)	—	—

Weakness Classification(1)

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

CWE-120Buffer Copy without Checking Size (Classic Buffer Overflow)

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-24 17:54 UTCEG score recompute

Frequently asked(5)

What is CVE-2023-42276?

CVE-2023-42276 is a critical vulnerability published on September 8, 2023. hutool v5.8.21 was discovered to contain a buffer overflow via the component jsonArray.

When was CVE-2023-42276 disclosed?

CVE-2023-42276 was first published in the National Vulnerability Database on September 8, 2023, with the most recent update on September 12, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-42276 actively exploited?

CVE-2023-42276 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 43.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-42276?

CVE-2023-42276 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2023-42276?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-42276, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-42276

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CVE-2023-42276

Published

Last Modified

References (2)

Patch Availability(2)

Affected Packages

Weakness Classification(1)

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-42276?

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CVE-2023-42276

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🔄 Last Modified

🔗 References (2)

Patch Availability(2)

Affected Packages

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-42276?

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