CVE-2022-22138Public exploitNetwork attack vector

Process crash via non-string indexOfSkip arguments

Published Jun 17, 2022 · Updated Sep 17, 2024

Denial of service in Magic Len Fast String Search 1.4.3 and earlier allows remote attackers to crash Node.js processes via non-string input. The indexOfSkip binding accepts numeric arguments; its calculations on those inputs lead V8 to read disallowed memory and segfault. Any network service that passes attacker-controlled values to the library can be interrupted without authentication or user interaction.

CVSS severity7.5
High
EPSS probability1.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in Magic Len Fast String Search 1.4.3 and earlier allows remote attackers to crash Node.js processes via non-string input. The indexOfSkip binding accepts numeric arguments; its calculations on those inputs lead V8 to read disallowed memory and segfault. Any network service that passes attacker-controlled values to the library can be interrupted without authentication or user interaction.

The record

CVE
CVE-2022-22138
Published
Jun 17, 2022
Updated
Sep 17, 2024
Vendor
Magic Len
Product
Fast String Search
Classifications
CWE-400, CWE-682, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 17, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <unspecified

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Magic Len · Fast String Searchversion=0 <unspecified

Published CVSS scores

7.5GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P

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 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-400Uncontrolled Resource Consumption
CWE-682Incorrect Calculation
T1499.004Application or System Exploitation

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo