CVE-2022-23535Network attack vector

Code execution via attacker-controlled _type resolution

Published Feb 24, 2023 · Updated Mar 10, 2025

Unsafe deserialization in LiteDB before 5.0.13 allows remote attackers to instantiate unsafe .NET types through crafted JSON. BsonMapper.Deserialize resolves the document's _type value through its type-name binder and loads the named assembly-backed class without a sufficient type allowlist. Exposure requires a consuming application to accept attacker-supplied JSON for direct database insertion or update, enabling code execution in that application's process.

CVSS severity7.3
High
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unsafe deserialization in LiteDB before 5.0.13 allows remote attackers to instantiate unsafe .NET types through crafted JSON. BsonMapper.Deserialize resolves the document's _type value through its type-name binder and loads the named assembly-backed class without a sufficient type allowlist. Exposure requires a consuming application to accept attacker-supplied JSON for direct database insertion or update, enabling code execution in that application's process.

The record

CVE
CVE-2022-23535
Published
Feb 24, 2023
Updated
Mar 10, 2025
Vendor
Maurício David
Product
LiteDB
Classifications
CWE-502
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 10, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 5.0.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Maurício David · LiteDBversion=< 5.0.13

Published CVSS scores

7.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data

Public exploit references

No public exploit references are available in this record.

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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