CVE-2020-36830

Name: CVE-2020-36830
Creator: NVD / NIST
Published: 2024-09-02T18:15:20.967+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.80%

Last modified Jun 17, 2026

CVE-2020-36830 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A vulnerability was found in nescalante urlregex up to 0.5.0 and classified as problematic. This issue affects some unknown processing of the file index.js of the component Backtracking. EPSS estimates a 0.80% chance of exploitation in the next 30 days.

Description

A vulnerability was found in nescalante urlregex up to 0.5.0 and classified as problematic. This issue affects some unknown processing of the file index.js of the component Backtracking. The manipulation leads to inefficient regular expression complexity. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.5.1 is able to address this issue. The identifier of the patch is e5a085afe6abfaea1d1a78f54c45af9ef43ca1f9. It is recommended to upgrade the affected component.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS 4.0

5.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.80%

51.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1333

Affected Software

Vendor	Product	Versions
Nescalante	Urlregex	< 0.5.1

References

https://github.com/nescalante/urlregex/commit/e5a085afe6abfaea1d1a78f54c45af9ef43ca1f9Patch
https://github.com/nescalante/urlregex/pull/8Exploit
https://github.com/nescalante/urlregex/releases/tag/v0.5.1Release Notes
https://vuldb.com/?ctiid.276269Permissions Required
https://vuldb.com/?id.276269Third Party Advisory

Timeline

Published: Sep 2, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2020-36830?

How severe is CVE-2020-36830?

CVE-2020-36830 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.80% probability of exploitation in the next 30 days.

How do I fix CVE-2020-36830?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-36830?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST