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CVE-2026-54279— AIOHTTP: Host-Only Cookies Become Domain Cookies After CookieJar Persistence

AI Predicted 5.3 Difficulty: Moderate EPSS 0.28% · P20

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProductVersion RangeStatus
aio-libsaiohttp< 3.14.1affected
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I. Basic Information for CVE-2026-54279

Vulnerability Information
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Vulnerability Title
AIOHTTP: Host-Only Cookies Become Domain Cookies After CookieJar Persistence
Source: CVE Program / CVE List V5
Vulnerability Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, host-only cookies that are saved with CookieJar.save() and then restored later with CookieJar.load() lose their host-only status. This vulnerability is fixed in 3.14.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N/E:U
Source: CVE Program / CVE List V5
Vulnerability Type
初始化不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
aio-libs aiohttp 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
aio-libs aiohttp是aio-libs的异步HTTP客户端/服务器框架。 aio-libs aiohttp 3.14.1之前版本存在资源管理错误漏洞，该漏洞源于资源管理错误，可能导致使用CookieJar.save()保存的主机专用Cookie在通过CookieJar.load()恢复时失去主机专用状态。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
aio-libsaiohttp < 3.14.1 -

II. Public POCs for CVE-2026-54279

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III. Intelligence Information for CVE-2026-54279

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Patches & Fixes for CVE-2026-54279 (1)

Vendor Advisories for CVE-2026-54279 (1)

Same Patch Batch · aio-libs · 2026-06-22 · 9 CVEs total

CVE-2026-54274AIOHTTP: Incomplete websocket frame payloads bypass memory limits
CVE-2026-54280AIOHTTP: Payload Response Resources Are Not Closed After Mid-Body Disconnect
CVE-2026-54277AIOHTTP: C HTTP Parser Bypasses max_line_size for Fragmented Lines
CVE-2026-54273AIOHTTP: HTTP/1 Pipelined Requests Queue Without Limit
CVE-2026-54278AIOHTTP: Unread Compressed Request Bodies Bypass client_max_size During Cleanup
CVE-2026-54275AIOHTTP: TLS Server Hostname Override Is Ignored When Reusing HTTPS Connections
CVE-2026-54276AIOHTTP: DigestAuthMiddleware Applies Credentials to Cross-Origin Redirect Challenges
CVE-2026-50269AIOHTTP: CRLF injection in multipart headers

IV. Related Vulnerabilities

Same product: aiohttp
Same vendor: aio-libs
Same weakness: CWE-665

V. Comments for CVE-2026-54279

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