Vulnerability in Nescalante Urlregex
CVE-2020-36830
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.
Vulnerability class: ReDoS (Regular Expression Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.008 (55.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000
Affected products
- Nescalante Urlregex — versions 0.1, 0.2, 0.3
Weakness classification (CWE)
References
- vuldb.com/ (Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required)
- github.com/nescalante/urlregex/pull/8 (issue-tracking, Exploit, exploit)
- github.com/nescalante/urlregex/commit/e5a085afe6abfaea1d1a78f54c45af9ef43ca1f9 (Patch, patch)
- github.com/nescalante/urlregex/releases/tag/v0.5.1 (Release Notes, patch)
Frequently asked questions
- What is CVE-2020-36830?
- CVE-2020-36830 is a medium-severity vulnerability in Nescalante Urlregex, classified under Inefficient Regular Expression Complexity. CVSS score: 4.3/10. Published 2024-09-02.
- How severe is CVE-2020-36830?
- Medium severity. CVSS v3 base score is 4.3 out of 10.