- Description
- AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. In versions 3.13.2 and below, handling of chunked messages can result in excessive blocking CPU usage when receiving a large number of chunks. If an application makes use of the request.read() method in an endpoint, it may be possible for an attacker to cause the server to spend a moderate amount of blocking CPU time (e.g. 1 second) while processing the request. This could potentially lead to DoS as the server would be unable to handle other requests during that time. This issue is fixed in version 3.13.3.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
- Products
- aiohttp
CVSS 4.0
- Type
- Secondary
- Base score
- 6.6
- Impact score
- -
- Exploitability score
- -
- Vector string
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity
- MEDIUM
CVSS 3.1
- Type
- Primary
- Base score
- 5.3
- Impact score
- 1.4
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Severity
- MEDIUM
- security-advisories@github.com
- CWE-770
- Hype score
- Not currently trending
Multiple vulnerabilities in aiohttp https://t.co/w29buYQJ8o High: CVE-2025-69223 auto_decompress susceptible to zip bomb CVE-2025-69228 DoS through large payloads CVE-2025-69227 DoS when bypassing asserts Medium: CVE-2025-69229 DoS through chunked messages
@oss_security
9 Jan 2026
531 Impressions
2 Retweets
8 Likes
1 Bookmark
1 Reply
0 Quotes
I discovered CVE-2025-69228 , CVE-2025-69229, and CVE-2025-69230 using my LLM agent https://t.co/aTzK1I4yUb
@07finder
8 Jan 2026
10534 Impressions
3 Retweets
122 Likes
49 Bookmarks
5 Replies
0 Quotes
CVE-2025-69229 AIOHTTP Denial of Service via Excessive Blocking CPU Usage in Chunked Message Handling https://t.co/kgEKjpO0Ta
@VulmonFeeds
6 Jan 2026
10 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
CVE-2025-69229 AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. In versions 3.13.2 and below, handling of chunked messages can result in excessive blo… https://t.co/KF6wZu6EA1
@CVEnew
6 Jan 2026
109 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
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