cve.bz

CVE-2023-47627

7.5 highEPSS 0.9%

High (7.5) in aiohttp aiohttp. EPSS 0.9% chance of exploitation in the next 30 days. Fixed in aiohttp 3.8.6.

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. The HTTP parser in AIOHTTP has numerous problems with header parsing, which could lead to request smuggling. This parser is only used when AIOHTTP_NO_EXTENSIONS is enabled (or not using a prebuilt wheel). These bugs have been addressed in commit `d5c12ba89` which has been included in release version 3.8.6. Users are advised to upgrade. There are no known workarounds for these issues.

Severity

CVSS 3.1

7.5 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS
0.9% chance of exploitation in the next 30 days; higher than 58% of CVEs (scores of 2026-10-31)
CWE
CWE-444
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-gfw2-4jvh-wgfgPyPIaiohttp<3.8.63.8.6
PYSEC-2023-246PyPIaiohttp<3.8.63.8.6

References

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