CVE-2022-25940Public exploitNetwork attack vector

Unauthenticated service crash via unhandled decodeURI exception

Published Dec 21, 2022 · Updated Apr 16, 2025

Improper input validation in all versions of John Papa lite-server allows remote attackers to crash the server with a crafted HTTP request. The request logger passes the attacker-controlled URL to decodeURI(), and the resulting URIError is not caught before reaching the Node.js runtime. No authentication or user interaction is required; one malformed request terminates the Node.js process and interrupts the development server.

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

What happened

Improper input validation in all versions of John Papa lite-server allows remote attackers to crash the server with a crafted HTTP request. The request logger passes the attacker-controlled URL to decodeURI(), and the resulting URIError is not caught before reaching the Node.js runtime. No authentication or user interaction is required; one malformed request terminates the Node.js process and interrupts the development server.

The record

CVE
CVE-2022-25940
Published
Dec 21, 2022
Updated
Apr 16, 2025
Vendor
John Papa
Product
lite-server
Classifications
CWE-20, CWE-400, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 21, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 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=0 <unspecified

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

John Papa · lite-serverversion=0 <unspecified

Published CVSS scores

7.5SnykCVSS: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-20Improper Input Validation
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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