A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker, who controls the HTTP server, to make the client script enter an infinite loop, consuming CPU time. The highest threat from this vulnerability is to system availability.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-2808-1 | python3.5 security update |
Debian DLA |
DLA-3432-1 | python2.7 security update |
Debian DLA |
DLA-3477-1 | python3.7 security update |
Debian DLA |
DLA-3966-1 | pypy3 security update |
Debian DLA |
DLA-3980-1 | python3.9 security update |
EUVD |
EUVD-2021-27013 | A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker, who controls the HTTP server, to make the client script enter an infinite loop, consuming CPU time. The highest threat from this vulnerability is to system availability. |
Ubuntu USN |
USN-5083-1 | Python vulnerabilities |
Ubuntu USN |
USN-5199-1 | Python vulnerabilities |
Ubuntu USN |
USN-5200-1 | Python vulnerabilities |
Ubuntu USN |
USN-5201-1 | Python vulnerabilities |
Ubuntu USN |
USN-6891-1 | Python vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Mon, 03 Nov 2025 22:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2025-11-03T21:45:09.305Z
Reserved: 2021-08-26T00:00:00.000Z
Link: CVE-2021-3737
No data.
Status : Modified
Published: 2022-03-04T19:15:08.730
Modified: 2025-11-03T22:15:51.000
Link: CVE-2021-3737
OpenCVE Enrichment
No data.
Debian DLA
EUVD
Ubuntu USN