CVE-2023-34610Public exploitNetwork attack vector

Application crash via unbounded JSON nesting

Published Jun 14, 2023 · Updated Jan 6, 2025

Stack exhaustion in json-io 4.14.0 and earlier allows remote attackers to crash applications by submitting deeply nested JSON arrays. JsonParser.readArray repeatedly calls JsonParser.readValue for each nested array without enforcing a maximum depth, exhausting the Java call stack. Reachability requires an application to parse attacker-supplied JSON; an uncaught StackOverflowError terminates processing and interrupts the affected request or service.

CVSS severity8.7
High
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack exhaustion in json-io 4.14.0 and earlier allows remote attackers to crash applications by submitting deeply nested JSON arrays. JsonParser.readArray repeatedly calls JsonParser.readValue for each nested array without enforcing a maximum depth, exhausting the Java call stack. Reachability requires an application to parse attacker-supplied JSON; an uncaught StackOverflowError terminates processing and interrupts the affected request or service.

The record

CVE
CVE-2023-34610
Published
Jun 14, 2023
Updated
Jan 6, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, CWE-400, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 6, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5GitLab Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-400Uncontrolled Resource Consumption
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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