CVE-2022-42004Public exploitNetwork attack vector

Application crash via recursive nested-array deserialization

Published Oct 2, 2022 · Updated Aug 3, 2024

Resource exhaustion in FasterXML jackson-databind before 2.12.7.1 and 2.13.0 through 2.13.3 allows remote attackers to crash applications. BeanDeserializer._deserializeFromArray recursively unwraps attacker-controlled nested JSON arrays without limiting nesting depth, exhausting the Java call stack. Exploitation requires UNWRAP_SINGLE_VALUE_ARRAYS to be explicitly enabled; the feature is disabled by default.

CVSS severity8.2
High
EPSS probability2.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in FasterXML jackson-databind before 2.12.7.1 and 2.13.0 through 2.13.3 allows remote attackers to crash applications. BeanDeserializer._deserializeFromArray recursively unwraps attacker-controlled nested JSON arrays without limiting nesting depth, exhausting the Java call stack. Exploitation requires UNWRAP_SINGLE_VALUE_ARRAYS to be explicitly enabled; the feature is disabled by default.

The record

CVE
CVE-2022-42004
Published
Oct 2, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-502, CWE-400, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 2, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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

8.2GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
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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