An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-06-29T10:55:35

Updated: 2024-08-03T23:50:42.973Z

Reserved: 2021-05-21T00:00:00

Link: CVE-2021-33503

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-06-29T11:15:07.847

Modified: 2024-11-21T06:08:58.030

Link: CVE-2021-33503

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-06-01T00:00:00Z

Links: CVE-2021-33503 - Bugzilla