CVE-2021-21240
- Source
- https://cve.org/CVERecord?id=CVE-2021-21240
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-21240.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-21240
- Aliases
- Downstream
- Related
- Published
- 2021-02-08T20:15:12.197Z
- Modified
- 2026-07-09T10:14:55.748879842Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
Affected packages
Git / github.com/httplib2/httplib2
Affected ranges
- Type
- GIT
- Repo
- https://github.com/httplib2/httplib2
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixed
- Database specific
{ "source": [ "CPE_RANGE", "REFERENCES" ], "cpe": "cpe:2.3:a:httplib2_project:httplib2:*:*:*:*:*:python:*:*", "extracted_events": [ { "introduced": "0" }, { "fixed": "0.19.0" } ] }