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CVE-2026-54276— AIOHTTP: DigestAuthMiddleware Applies Credentials to Cross-Origin Redirect Challenges

Quick assessment

Affected
aio-libs aiohttp
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

aio-libs aiohttp是aio-libs的异步HTTP客户端/服务器框架。 aio-libs aiohttp 3.14.1之前版本存在安全漏洞，该漏洞源于DigestAuthMiddleware在跨域重定向后可能发送身份验证响应，如果加密较弱或密码重用，攻击者可能提取用户的凭据。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.31% · P21

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
aio-libs aiohttp < 3.14.1 affected
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I. Basic Information for CVE-2026-54276

Vulnerability Information
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Vulnerability Title
AIOHTTP: DigestAuthMiddleware Applies Credentials to Cross-Origin Redirect Challenges
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, DigestAuthMiddleware can send an authentication response after following a cross-origin redirect. This likely requires an open redirect vulnerability or similar on the target domain for an attacker to be able to execute. Further, the attacker is only receiving the digest, so should only be able to extract the user's credentials if the cryptography is weak or there is some kind of password reuse. This vulnerability is fixed in 3.14.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
aio-libs aiohttp 信息泄露漏洞
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之前版本存在安全漏洞，该漏洞源于DigestAuthMiddleware在跨域重定向后可能发送身份验证响应，如果加密较弱或密码重用，攻击者可能提取用户的凭据。
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

Vendor Product Affected Versions CPE Subscribe
aio-libs aiohttp < 3.14.1 -

II. Public POCs for CVE-2026-54276

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III. Intelligence Information for CVE-2026-54276

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Patches & Fixes for CVE-2026-54276 (1)

Vendor Advisories for CVE-2026-54276 (1)

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

CVE-2026-54274 AIOHTTP: Incomplete websocket frame payloads bypass memory limits
CVE-2026-54280 AIOHTTP: Payload Response Resources Are Not Closed After Mid-Body Disconnect
CVE-2026-54277 AIOHTTP: C HTTP Parser Bypasses max_line_size for Fragmented Lines
CVE-2026-54273 AIOHTTP: HTTP/1 Pipelined Requests Queue Without Limit
CVE-2026-54278 AIOHTTP: Unread Compressed Request Bodies Bypass client_max_size During Cleanup
CVE-2026-54279 AIOHTTP: Host-Only Cookies Become Domain Cookies After CookieJar Persistence
CVE-2026-54275 AIOHTTP: TLS Server Hostname Override Is Ignored When Reusing HTTPS Connections
CVE-2026-50269 AIOHTTP: CRLF injection in multipart headers

IV. Related Vulnerabilities

Same product: aiohttp
Same vendor: aio-libs
Same weakness: CWE-200

V. Comments for CVE-2026-54276

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