CVEvulnerability
CVE-2021-32837
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2023-01-17
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-1333
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.
Affected configurations
• mechanize project mechanize (< 0.4.6)
Related
Weakness · CWE (1)
- CWE-1333 Inefficient Regular Expression Complexity weakness
References
- https://github.com/python-mechanize/mechanize/blob/3acb1836f3fd8edc5a758a417dd46b53832ae3b5/mechanize/_urllib2_fork.py#L878-L879 Exploit, Third Party Advisory
- 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 lists.debian.org
- https://securitylab.github.com/advisories/GHSL-2021-108-python-mechanize-mechanize/ Exploit, Third Party Advisory
- https://github.com/python-mechanize/mechanize/blob/3acb1836f3fd8edc5a758a417dd46b53832ae3b5/mechanize/_urllib2_fork.py#L878-L879 Exploit, Third Party Advisory
- 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 lists.debian.org
- https://lists.debian.org/debian-lts-announce/2025/12/msg00028.html lists.debian.org
- https://securitylab.github.com/advisories/GHSL-2021-108-python-mechanize-mechanize/ Exploit, Third Party Advisory