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Aiohttp CVE-2022-33124

MEDIUM
2022-06-23 cve@mitre.org
5.5
CVSS 3.1 · NVD
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Vulnerability Assessment

Impact

CVSS score of 5.5 (MEDIUM). Attack characteristics: local attack vector, low complexity, no privileges required, user interaction required. Public proof-of-concept exploit code is available.

Exploit ScenarioDerived

Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.7% exploitation probability (EPSS)

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AnalysisAI

AIOHTTP 3.8.1 can report a "ValueError: Invalid IPv6 URL" outcome, which can lead to a Denial of Service (DoS). Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

AIOHTTP 3.8.1 can report a "ValueError: Invalid IPv6 URL" outcome, which can lead to a Denial of Service (DoS). NOTE: multiple third parties dispute this issue because there is no example of a context in which denial of service would occur, and many common contexts have exception handing in the calling application Affected products include: Aiohttp.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 5.5 MEDIUM
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

DescriptionNVD

AIOHTTP 3.8.1 can report a "ValueError: Invalid IPv6 URL" outcome, which can lead to a Denial of Service (DoS). NOTE: multiple third parties dispute this issue because there is no example of a context in which denial of service would occur, and many common contexts have exception handing in the calling application

Threat Intelligence Overview

EPSS Score
0.7%
Top 52% exploitable
Exploit
POC
Public exploit code exists
Data Quality
3 sources
Confidence: Low

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.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC Yes
EPSS 0.7%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Small
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +28
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)NVD

cpe:2.3:a:aiohttp:aiohttp:3.8.1:*:*:*:*:*:*:*
CVE-2023-47627 HIGH POC
7.5 Nov 14

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Rated high severity (CVSS 7.5), this vul

CVE-2023-37276 HIGH POC
7.5 Jul 19

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Rated high severity (CVSS 7.5), this vul

CVE-2026-69244 HIGH POC
7.1 Aug 03

Out-of-bounds heap read in aiohttp's C HTTP response parser (versions ≤ 3.14.2) allows an attacker-controlled server to

CVE-2026-59881 MEDIUM POC
6.9 Jul 30

Uncontrolled decompression in aiohttp's WebSocket client prior to version 3.14.2 allows a malicious server to exhaust CP

CVE-2023-47641 MEDIUM POC
6.5 Nov 14

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Rated medium severity (CVSS 6.5), this v

CVE-2026-69243 MEDIUM POC
6.3 Aug 03

HTTP request smuggling in aiohttp's server-side parser allows unauthenticated remote attackers to inject and misdirect H

CVE-2023-49082 MEDIUM POC
5.3 Nov 29

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Rated medium severity (CVSS 5.3), this v

CVE-2023-49081 MEDIUM POC
5.3 Nov 30

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Rated medium severity (CVSS 5.3), this v

CVE-2024-52303 HIGH
8.7 Nov 18

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Rated high severity (CVSS 8.7), this vul

CVE-2026-111064 HIGH
8.2 Oct 19

Idle or half-open connections to aiohttp server deployments at version 3.14.3 and earlier are never timed out during the

CVE-2026-111066 HIGH
8.2 Oct 19

Unauthenticated remote attackers can exhaust file descriptors in aiohttp-based web services by sending crafted multipart

CVE-2025-69223 HIGH
7.5 Jan 05

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below allow a zip bo

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