CVE-2021-41945

CriticalCVSS 9.1/10Last modified Jul 9, 2026

Description

Encode OSS httpx < 0.23.0 is affected by improper input validation in `httpx.URL`, `httpx.Client` and some functions using `httpx.URL.copy_with`.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-20

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://gist.github.com/lebr0nli/4edb76bbd3b5ff993cf44f2fbce5e571Exploit, Third Party Advisory
https://github.com/encode/httpxProduct, Third Party Advisory
https://github.com/encode/httpx/discussions/1831Exploit, Issue Tracking, Third Party Advisory
https://github.com/encode/httpx/issues/2184Exploit, Issue Tracking, Third Party Advisory
https://github.com/encode/httpx/releases/tag/0.23.0Release Notes, Third Party Advisory
https://gist.github.com/lebr0nli/4edb76bbd3b5ff993cf44f2fbce5e571Exploit, Third Party Advisory
https://github.com/encode/httpxProduct, Third Party Advisory
https://github.com/encode/httpx/discussions/1831Exploit, Issue Tracking, Third Party Advisory
https://github.com/encode/httpx/issues/2184Exploit, Issue Tracking, Third Party Advisory
https://github.com/encode/httpx/releases/tag/0.23.0Release Notes, Third Party Advisory

Timeline

Published: Apr 28, 2022
Last modified: Jul 9, 2026
NVD status: Modified

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