https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-03T20:40:25.571700+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2021-21240 CVE-2021-21240 — Regular Expression Denial of Service in httplib2 2026-10-03T20:40:26.702905+00:00

Affected: httplib2

httplib2 is a comprehensive HTTP client library for Python. In httplib2 before version 0.19.0, a malicious server which responds with long series of "\xa0" characters in the "www-authenticate" header may cause Denial of Service (CPU burn while parsing header) of the httplib2 client accessing said server. This is fixed in version 0.19.0 which contains a new implementation of auth headers parsing using the pyparsing library.