AIOHTTP is vulnerable to HTTP Request/Response Smuggling through incorrect parsing of chunked trailer sections
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| aio-libs | aiohttp | affected |
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No data.
No data available yet.
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-4613-1 | python-aiohttp security update |
Debian DLA |
DLA-4876-1 | python-aiohttp security update |
EUVD |
EUVD-2025-21384 | AIOHTTP is vulnerable to HTTP Request/Response Smuggling through incorrect parsing of chunked trailer sections |
Github GHSA |
GHSA-9548-qrrj-x5pj | AIOHTTP is vulnerable to HTTP Request/Response Smuggling through incorrect parsing of chunked trailer sections |
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.355% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Aiohttp
Aiohttp aiohttp |
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| CPEs | cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Aiohttp
Aiohttp aiohttp |
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| Metrics |
cvssV3_1
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cvssV3_1
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| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| Metrics |
epss
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| Type | Values Removed | Values Added |
|---|---|---|
| References |
| |
| Metrics |
threat_severity
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cvssV3_1
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| Type | Values Removed | Values Added |
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| Description | AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.12.14, the Python parser is vulnerable to a request smuggling vulnerability due to not parsing trailer sections of an HTTP request. If a pure Python version of aiohttp is installed (i.e. without the usual C extensions) or AIOHTTP_NO_EXTENSIONS is enabled, then an attacker may be able to execute a request smuggling attack to bypass certain firewalls or proxy protections. Version 3.12.14 contains a patch for this issue. | |
| Title | AIOHTTP is vulnerable to HTTP Request/Response Smuggling through incorrect parsing of chunked trailer sections | |
| Weaknesses | CWE-444 | |
| References |
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| Metrics |
cvssV4_0
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