Segmentio is-url up to 1.2.2 index.js redos

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in Segmentio is-url up to 1.2.2. It has been rated as problematic. Affected by this issue is some unknown processing of the file index.js. The manipulation with an unknown input leads to a redos vulnerability. Using CWE to declare the problem leads to CWE-1333. The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. Impacted is availability.

The weakness was presented 02/02/2023 as 18. The advisory is available at This vulnerability is handled as CVE-2018-25079. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1449.003 by the MITRE ATT&CK project.

Upgrading to version 1.2.3 eliminates this vulnerability. The upgrade is hosted for download at Applying the patch 149550935c63a98c11f27f694a7c4a9479e53794 is able to eliminate this problem. The bugfix is ready for download at The best possible mitigation is suggested to be upgrading to the latest version. The advisory contains the following remark:

As disclosed by email, the regex in this module was vulnerable to catastrophic backtracking. This could be used as a REDOS vector for Node.js servers that use this module.





  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍



VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍


Class: Redos
CWE: CWE-1333 / CWE-400 / CWE-404
ATT&CK: T1449.003

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: is-url 1.2.3
Patch: 149550935c63a98c11f27f694a7c4a9479e53794


02/02/2023 Advisory disclosed
02/02/2023 +0 days CVE reserved
02/02/2023 +0 days VulDB entry created
03/04/2023 +30 days VulDB last update


Advisory: 18
Status: Confirmed

CVE: CVE-2018-25079 (🔒)


Created: 02/02/2023 08:58 PM
Updated: 03/04/2023 09:07 AM
Changes: 02/02/2023 08:58 PM (44), 03/04/2023 09:07 AM (2)
Complete: 🔍


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