Vulnerability in Mechanize Project
CVE-2021-32837
mechanize, a library for automatically interacting with HTTP web servers, contains a regular expression that is vulnerable to regular expression denial of service (ReDoS) prior to version 0.4.6. If a web server responds in a malicious way, then mechanize could crash. Version 0.4.6 has a patch for the issue.
Vulnerability class: ReDoS (Regular Expression Denial of Service)
EPSS: 0.287 (97.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Mechanize_project Mechanize
- Python-mechanize Mechanize — versions 0.4.6
Weakness classification (CWE)
References
- security-advisories@github.com (Exploit, Third Party Advisory)
- security-advisories@github.com (Exploit, Third Party Advisory)
- security-advisories@github.com (Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory)
- security-advisories@github.com (mailing-list)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2021-32837?
- CVE-2021-32837 is a high-severity vulnerability in Mechanize Project, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2023-01-17.
- How severe is CVE-2021-32837?
- High severity. CVSS v3 base score is 7.5 out of 10.