CVE-2021-41945

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

2.14% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 80.4% of scored records. A rank, not a probability.

NVD base score

9.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-07-09.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2022-04-28 13:22Z4 YR AGO

Last updated

2026-07-09 00:15Z1 MO AGO

Reserved

2021-10-04

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-20Improper Input ValidationClass

Data version

5.2

Document digest

805d595425b0c37be0d49c1637e64effd54768b3df6ac0d8685af0e09cf9dbed

• gist.github.comhttps://gist.github.com/lebr0nli/4edb76bbd3b5ff993cf44f2fbce5e571
• github.comhttps://github.com/encode/httpx
• github.comhttps://github.com/encode/httpx/discussions/1831
• github.comhttps://github.com/encode/httpx/issues/2184
• github.comhttps://github.com/encode/httpx/releases/tag/0.23.0