Encode
CVE-2021-41945
CRITICAL
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
|
| Impact | CVSS score of 9.1 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 2.18%. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the critical-severity affected system. |
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Alert meAnalysisAI
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. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in pypi
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified under CWE-20. 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. Affected products include: Encode Httpx.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Affected Products (CPE)NVD
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This affects all versions of package uvicorn. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable
Uncontrolled resource consumption in Django REST Framework prior to 3.17.2 allows unauthenticated remote attackers to ex
Uvicorn before 0.11.7 is vulnerable to HTTP response splitting. Rated medium severity (CVSS 5.3), this vulnerability is
There MultipartParser usage in Encode's Starlette python framework before versions 0.25.0 allows an unauthenticated and
Denial of service in Django REST Framework prior to 3.18.2 allows a remote unauthenticated client to pin synchronous wor
Memory exhaustion in Django REST framework 3.6.4 through 3.18.1 lets a remote unauthenticated client make a single small
Failed token revocation in Django REST Framework 3.12.0 through 3.18.1 leaves API credentials live after they are suppos
A flaw was found in Django REST Framework versions before 3.12.0 and before 3.11.2. Rated medium severity (CVSS 6.1), th
Exploit-DB