- Description
- AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below allow for an infinite loop to occur when assert statements are bypassed, resulting in a DoS attack when processing a POST body. If optimizations are enabled (-O or PYTHONOPTIMIZE=1), and the application includes a handler that uses the Request.post() method, then an attacker may be able to execute a DoS attack with a specially crafted message. 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
- 7.5
- Impact score
- 3.6
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Severity
- HIGH
- security-advisories@github.com
- CWE-835
- 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
CVE-2025-69227: The Optimized Python Loop That Turns a POST Request into a Permanent Server Hang Read the full report on - https://t.co/DiRVOgTDJ2 https://t.co/GhMB8biviK
@cyberbivash
7 Jan 2026
3 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
CVE-2025-69227 AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below allow for an infinite loop to occur when assert statements a… https://t.co/nV3MLo61hB
@CVEnew
6 Jan 2026
152 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
[
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:*",
"matchCriteriaId": "715B630E-B141-4247-A920-3FFBD8045A05",
"versionEndExcluding": "3.13.3",
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}
],
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"operator": "OR"
}
]
}
]