CVE-2021-32837
HIGHmechanize < 0.4.6 - Regular Expression Denial of Service
Title source: llmDescription
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.
References (6)
Core 6
Core References
Mailing List mailing-list
https://lists.debian.org/debian-lts-announce/2023/06/msg00022.html
Exploit, Third Party Advisory
https://github.com/python-mechanize/mechanize/blob/3acb1836f3fd8edc5a758a417dd46b53832ae3b5/mechanize/_urllib2_fork.py#L878-L879
Patch, Third Party Advisory
https://github.com/python-mechanize/mechanize/commit/dd05334448e9f39814bab044d2eaa5ef69b410d6
Third Party Advisory
https://github.com/python-mechanize/mechanize/releases/tag/v0.4.6
Exploit, Third Party Advisory
https://securitylab.github.com/advisories/GHSL-2021-108-python-mechanize-mechanize/
Scores
CVSS v3
7.5
EPSS
0.2866
EPSS Percentile
97.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-1333
Status
published
Products (2)
mechanize_project/mechanize
< 0.4.6
pypi/mechanize
0 - 0.4.6PyPI
Published
Jan 17, 2023
Tracked Since
Feb 18, 2026