OESA-2026-3278

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-3278
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-3278.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-3278
Upstream
Published
2026-08-07T06:59:46Z
Modified
2026-08-18T01:21:27.711333150Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
python-aiohttp security update
Details

Async http client/server framework (asyncio).

Security Fix(es):

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the WebSocket client accepts and decompresses frames with the RSV1 bit set even when the permessage-deflate extension was not negotiated, allowing a malicious server to cause unexpected CPU and memory consumption. This issue is fixed in version 3.14.2.(CVE-2026-59881)

Database specific 
{
    "severity": "Medium"
}
References

Affected packages

openEuler:24.03-LTS-SP4 / python-aiohttp

Package

Name
python-aiohttp
Purl
pkg:rpm/openEuler/python-aiohttp&distro=openEuler-24.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.14.3-1.oe2403sp4

Ecosystem specific 

{
    "x86_64": [
        "python-aiohttp-debuginfo-3.14.3-1.oe2403sp4.x86_64.rpm",
        "python-aiohttp-debugsource-3.14.3-1.oe2403sp4.x86_64.rpm",
        "python-aiohttp-help-3.14.3-1.oe2403sp4.x86_64.rpm",
        "python3-aiohttp-3.14.3-1.oe2403sp4.x86_64.rpm"
    ],
    "aarch64": [
        "python-aiohttp-debuginfo-3.14.3-1.oe2403sp4.aarch64.rpm",
        "python-aiohttp-debugsource-3.14.3-1.oe2403sp4.aarch64.rpm",
        "python-aiohttp-help-3.14.3-1.oe2403sp4.aarch64.rpm",
        "python3-aiohttp-3.14.3-1.oe2403sp4.aarch64.rpm"
    ],
    "src": [
        "python-aiohttp-3.14.3-1.oe2403sp4.src.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3278.json"