Exposure of Sensitive System Information to an Unauthorized Control Sphere

Overview org.asynchttpclient:async-http-client is a maven plugin for the Async Http Client AHC classes. Affected versions of this package are vulnerable to Exposure of Sensitive System Information to an Unauthorized Control Sphere via the propagatedHeaders method during cross-origin redirects,...

CVE-2026-44503 Kiota abstractions RedirectHandler leaks Cookie/Proxy-Authorization headers on cross-host redirect

The RedirectHandler middleware in microsoft/kiota-java com.microsoft.kiota:microsoft-kiota-http-okHttp v1.9.0 and other Kiota libraries fails to strip sensitive HTTP headers when following 3xx redirects to a different host or scheme. Only the Authorization header is removed; Cookie,...

Cowlib injection vulnerability

Cowlib is a web protocol message parsing and building library developed by Nine Nines. Version 2.9.0 of cowlib contains an injection vulnerability. This vulnerability stems from the cowcookie:cookie/1 function in cowlib, which constructs client Cookie request headers based on a list of name-value...

Traefik < 2.11.44 / 3.x < 3.6.15 Information Disclosure (GHSA-p6hg-qh38-555r)

The version of Traefik installed on the remote macOS host is prior to 2.11.44 or 3.x prior to 3.6.15. It is, therefore, affected by an information disclosure vulnerability: - Traefik's errors middleware forwards Authorization and Cookie headers to separate error page service. CVE-2026-41181 Note...

Kiota abstractions RedirectHandler leaks Cookie/Proxy-Authorization headers on cross-host redirect

Summary The RedirectHandler middleware in microsoft/kiota-java com.microsoft.kiota:microsoft-kiota-http-okHttp v1.9.0 and other Kiota libraries fails to strip sensitive HTTP headers when following 3xx redirects to a different host or scheme. This vulnerability is present in the RedirectHandlers...

PYSEC-2026-50

An issue was discovered in 6.0 before 6.0.5 and 5.2 before 5.2.14. Response headers do not vary on cookies if a session is not modified, but SESSIONSAVEEVERYREQUEST is True. A remote attacker can steal a user's session after that user visits a cached public page. Earlier, unsupported Django serie...

JLSEC-2026-392

A malicious server can serve excessive amounts of Set-Cookie: headers in a HTTP response to curl and curl 7.84.0 stores all of them. A sufficiently large amount of big cookies make subsequent HTTP requests to this, or other servers to which the cookies match, create requests that become larger th...

PT-2026-40988

A malicious server can serve excessive amounts of Set-Cookie: headers in a HTTP response to curl and curl 7.84.0 stores all of them. A sufficiently large amount of big cookies make subsequent HTTP requests to this, or other servers to which the cookies match, create requests that become larger th...

Unity Linux 20.1070e Security Update: python3 (UTSA-2026-014307)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-014307 advisory. When using http.cookies.Morsel, user-controlled cookie values and parameters can allow injecting HTTP headers into messages. Patch rejects all control characters...

Amazon Linux 2023 : python3, python3-devel, python3-idle (ALAS2023-2026-1583)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1583 advisory. When folding a long comment in an email header containing exclusively unfoldable characters, the parenthesis would not be preserved. This could be used for injecting headers into email message...

CVE-2026-34518

A flaw was found in AIOHTTP, an asynchronous HTTP client/server framework for asyncio and Python. When AIOHTTP follows redirects to a different origin, it incorrectly retains sensitive Cookie and Proxy-Authorization headers. This oversight could lead to information disclosure, where these headers...

CVE-2026-34518 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...

Allocation of Resources Without Limits or Throttling

Overview h3 is a Minimal HTTP framework built for high performance and portability. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling through the getChunkedCookieCount function. An attacker can cause the server to enter an inefficient cleanup...

GHSA-9W88-79F8-M3VP Permissive List of Allowed Inputs in ewe

Summary ewe's chunked transfer encoding trailer handling merges declared trailer fields into req.headers after body parsing, but the denylist only blocks 9 header names. Security-sensitive headers like authorization, cookie, and x-forwarded-for can be injected or overwritten by a malicious client...

Hono security vulnerability

Hono is a web framework written in TypeScript for the Hono community. Versions of Hono prior to 4.12.4 contained security vulnerabilities. These vulnerabilities stemmed from the setCookie tool, which did not validate the semicolons, line breaks, or newlines in the domain and path parameters when...

SUSE-SU-2026:20543-1 Security update for python313

This update for python313 fixes the following issues: Update to version 3.13.12. Security issues fixed: - CVE-2025-11468: header injection when folding a long comment in an email header containing exclusively unfoldable characters bsc1257029. - CVE-2025-15282: user-controlled data URLs parsed may...

Amazon Linux 2023 : python3.12, python3.12-devel, python3.12-idle (ALAS2023-2026-1444)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1444 advisory. When folding a long comment in an email header containing exclusively unfoldable characters, the parenthesis would not be preserved. This could be used for injecting headers into email message...

CVE-2026-25577: Uncaught Exception

Emmett is a framework designed to simplify your development process. Prior to 1.3.11, the cookies property in mmettcore.http.wrappers.Request does not handle CookieError exceptions when parsing malformed Cookie headers. This allows unauthenticated attackers to trigger HTTP 500 errors and cause...

Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 : Python vulnerabilities (USN-8018-1)

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8018-1 advisory. Denis Ledoux discovered that Python incorrectly parsed email message headers. An...

USN-8018-1: Python vulnerabilities

Denis Ledoux discovered that Python incorrectly parsed email message headers. An attacker could possibly use this issue to inject arbitrary headers into email messages. This issue only affected python3.6, python3.7, python3.8, python3.9, python3.10, python3.11, python3.12, python3.13, and...