CVE-2021-32837 | THREATINT

Description

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.

PUBLISHED Reserved 2021-05-12 | Published 2023-01-17 | Updated 2025-12-22 | Assigner GitHub_M

HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-1333 Inefficient Regular Expression Complexity

Product status

0.4.6 (custom) before 0.4.6

affected

References

securitylab.github.com/...21-108-python-mechanize-mechanize/

github.com/...a417dd46b53832ae3b5/mechanize/_urllib2_fork.py

github.com/python-mechanize/mechanize/releases/tag/v0.4.6

github.com/...ommit/dd05334448e9f39814bab044d2eaa5ef69b410d6

lists.debian.org/debian-lts-announce/2023/06/msg00022.html ([debian-lts-announce] 20230620 [SECURITY] [DLA 3460-1] python-mechanize security update) mailing-list

lists.debian.org/debian-lts-announce/2025/12/msg00028.html

securitylab.github.com/...21-108-python-mechanize-mechanize/

github.com/...a417dd46b53832ae3b5/mechanize/_urllib2_fork.py

github.com/python-mechanize/mechanize/releases/tag/v0.4.6

github.com/...ommit/dd05334448e9f39814bab044d2eaa5ef69b410d6

lists.debian.org/debian-lts-announce/2023/06/msg00022.html ([debian-lts-announce] 20230620 [SECURITY] [DLA 3460-1] python-mechanize security update) mailing-list

cve.org (CVE-2021-32837)

nvd.nist.gov (CVE-2021-32837)

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