robots-txt-guard Inefficient Regular Expression Complexity vulnerability

ALTO 7.5CVE-2021-4305 · GHSA-6g33-8w2q-4hxv · Published 05/01/2023 · updated 17/06/2026

In breve

CVE-2021-4305 è una vulnerabilità ALTO (CVSS 7.5) che riguarda robots-txt-guard (bridgeline), robots-txt-guard.
Probabilità di sfruttamento nei prossimi 30 giorni (EPSS): 1.0%, superiore al 63.8% delle vulnerabilità.
Correzione: aggiornare a 2021-02-07, 1.0.2 o successiva.

Package	Affected versions	Patched versions
robots-txt-guard bridgeline	`< 2021-02-07`	`2021-02-07`
robots-txt-guard npm	`< 1.0.2`	`1.0.2`

Description

A vulnerability was found in Woorank robots-txt-guard. It has been rated as problematic. Affected by this issue is the function makePathPattern of the file lib/patterns.js. The manipulation of the argument pattern leads to inefficient regular expression complexity. The exploit has been disclosed to the public and may be used. The name of the patch is c03827cd2f9933619c23894ce7c98401ea824020. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-217448.

NVD description

References

nvd.nist.gov/vuln/detail/CVE-2021-4305 · ADVISORY
Woorank/robots-txt-guard#4 · WEB
Woorank/robots-txt-guard commit c03827c · WEB
Woorank/robots-txt-guard · PACKAGE
vuldb.com · WEB
vuldb.com · WEB

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Package

Affected versions

Patched versions

robots-txt-guard

bridgeline

< 2021-02-07

2021-02-07

robots-txt-guard

npm

< 1.0.2

1.0.2

Description

NVD description