7.5

CVE-2021-32837

Exploit

mechanize vulnerable to ReDoS

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Mechanize Project ≫ Mechanize SwPlatformpython Version < 0.4.6
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 28.66% 0.979
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
security-advisories@github.com 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-1333 Inefficient Regular Expression Complexity

The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.

https://github.com/python-mechanize/mechanize/blob/3acb1836f3fd8edc5a758a417dd46b53832ae3b5/mechanize/_urllib2_fork.py#L878-L879
Third Party Advisory
Exploit
https://github.com/python-mechanize/mechanize/commit/dd05334448e9f39814bab044d2eaa5ef69b410d6
Patch
Third Party Advisory
https://github.com/python-mechanize/mechanize/releases/tag/v0.4.6
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/06/msg00022.html
https://securitylab.github.com/advisories/GHSL-2021-108-python-mechanize-mechanize/
Third Party Advisory
Exploit
https://lists.debian.org/debian-lts-announce/2025/12/msg00028.html