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aiohttp 3.13.3: known vulnerabilities · Page 2

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Vulnerabilities: 32

  1. CVE-2026-47265

    Medium · CVSS 6.6EPSS 0.15%Fix available

    AIOHTTP vulnerable to cross-origin redirect with per-request cookies

    AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.14.0, cookies set with the `cookies` parameter on requests are sent after following a cross-origin redirect. If a developer uses the `cookies` parameter on a per-request basis then sensitive data might be leaked to an attacker if they manage to control a redirect. Version 3.14.0 patches the issue. If unable to upgrade, using a `Cookie` header in the `headers` parameter is not vulnerable.

    • Update to 3.14.0
    Published Updated
  2. CVE-2026-34993

    Medium · CVSS 6.4EPSS 0.18%Fix available

    AIOHTTP Vulnerable to Deserialization of Untrusted Data

    AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.14.0, using ``CookieJar.load()`` with untrusted input may allow arbitrary code execution. Most applications using this function will be doing so with the user's own data, so this is unlikely to affect many applications. Version 3.14.0 patches the issue. If an application does allow attacker controlled files to be loaded, a workaround on older releases would be to sanitize the files before loading.

    • Update to 3.14.0
    Published Updated
  3. CVE-2026-34520

    Low · CVSS 2.7EPSS 0.46%Fix available

    AIOHTTP: C parser (llhttp) accepts null bytes and control characters in response header values - header injection / security bypass

    AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, the C parser (the default for most installs) accepted null bytes and control characters in response headers. This issue has been patched in version 3.13.4.

    • Update to 3.13.4
    Published Updated
  4. CVE-2026-34519

    Low · CVSS 2.7EPSS 0.29%Fix available

    AIOHTTP: HTTP response splitting via \r in reason phrase

    AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, an attacker who controls the reason parameter when creating a Response may be able to inject extra headers or similar exploits. This issue has been patched in version 3.13.4.

    • Update to 3.13.4
    Published Updated
  5. CVE-2026-34518

    Low · CVSS 2.7EPSS 0.34%Fix available

    AIOHTTP: Cookie and Proxy-Authorization headers leaked on cross-origin redirect

    AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, when following redirects to a different origin, aiohttp drops the Authorization header, but retains the Cookie and Proxy-Authorization headers. This issue has been patched in version 3.13.4.

    • Update to 3.13.4
    Published Updated
  6. CVE-2026-34517

    Low · CVSS 2.7EPSS 0.38%Fix available

    AIOHTTP: Late size enforcement for non-file multipart fields causes memory DoS

    AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, for some multipart form fields, aiohttp read the entire field into memory before checking client_max_size. This issue has been patched in version 3.13.4.

    • Update to 3.13.4
    Published Updated
  7. CVE-2026-34516

    Medium · CVSS 6.6EPSS 0.44%Fix available

    AIOHTTP: Multipart Header Size Bypass

    AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, a response with an excessive number of multipart headers may be allowed to use more memory than intended, potentially allowing a DoS vulnerability. This issue has been patched in version 3.13.4.

    • Update to 3.13.4
    Published Updated
  8. CVE-2026-34515

    Medium · CVSS 6.6EPSS 0.43%Fix available

    AIOHTTP: UNC SSRF/NTLMv2 Credential Theft/Local File Read in static resource handler on Windows

    AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, on Windows the static resource handler may expose information about a NTLMv2 remote path. This issue has been patched in version 3.13.4.

    • Update to 3.13.4
    Published Updated
  9. CVE-2026-34514

    Low · CVSS 2.7EPSS 0.32%Fix available

    AIOHTTP: CRLF injection in multipart part content type header construction

    AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, an attacker who controls the content_type parameter in aiohttp could use this to inject extra headers or similar exploits. This issue has been patched in version 3.13.4.

    • Update to 3.13.4
    Published Updated
  10. CVE-2026-22815

    Medium · CVSS 6.9EPSS 0.44%Fix available

    AIOHTTP: Uncapped memory usage possible through aiohttp allowing unlimited trailer headers

    AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, insufficient restrictions in header/trailer handling could cause uncapped memory usage. This issue has been patched in version 3.13.4.

    • Update to 3.13.4
    Published Updated
  11. CVE-2026-34513

    Low · CVSS 2.7EPSS 0.44%Fix available

    AIOHTTP: Denial of Service (DoS) via Unbounded DNS Cache in TCPConnector

    AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, an unbounded DNS cache could result in excessive memory usage possibly resulting in a DoS situation. This issue has been patched in version 3.13.4.

    • Update to 3.13.4
    Published Updated

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