cpython: email header injection due to unquoted newlines

A flaw was found in the email module in the Python standard library. When serializing an email message, the BytesGenerator class fails to properly quote newline characters for email headers. This issue is exploitable when the LiteralHeader class is used as it does not respect email folding rules,...

cpython: wsgiref.headers.Headers allows header newline injection in Python

Missing newline filtering has been discovered in Python. User-controlled header names and values containing newlines can allow injecting HTTP headers...

cpython: Header injection via newlines in data URL mediatype in Python

Missing newline filtering has been discovered in Python. User-controlled data URLs parsed by urllib.request.DataHandler allow injecting headers through newlines in the data URL mediatype...

cpython: Missing character filtering in Python

Missing character filtering has been discovered in Python. 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 messages where addresses are user-controlled and not...

CVE-2026-40175 Axios has Unrestricted Cloud Metadata Exfiltration via Header Injection Chain

Axios is a promise based HTTP client for the browser and Node.js. Versions prior to 1.15.0 and 0.3.1 are vulnerable to a specific gadget-style attack chain in which prototype pollution in a third-party dependency may be leveraged to inject unsanitized header values into outbound requests. This...

CVE-2026-40175 Axios has Unrestricted Cloud Metadata Exfiltration via Header Injection Chain

Axios is a promise based HTTP client for the browser and Node.js. Versions prior to 1.15.0 and 0.3.1 are vulnerable to a specific gadget-style attack chain in which prototype pollution in a third-party dependency may be leveraged to inject unsanitized header values into outbound requests. This...

CVE-2026-40175 Axios has Unrestricted Cloud Metadata Exfiltration via Header Injection Chain

Axios is a promise based HTTP client for the browser and Node.js. Versions prior to 1.15.0 and 0.3.1 are vulnerable to a specific gadget-style attack chain in which prototype pollution in a third-party dependency may be leveraged to inject unsanitized header values into outbound requests. This...

CVE-2026-40175

The Axios HTTP client, used in both browsers and Node.js, is vulnerable to a specific gadget-style attack chain in versions prior to 1.15.0 and 0.3.1 . The root cause is prototype pollution in a third-party dependency, which can be leveraged to inject unsanitized header values into outbound reque...

busybox: BusyBox wget: HTTP request-target allows header injection

A flaw was found in BusyBox wget. This vulnerability allows header injection via raw CR/LF and other C0 control bytes in the HTTP request-target. An attacker can exploit this by crafting a URL containing these control characters to inject arbitrary HTTP headers into the outgoing request,...

CVE-2026-1502

CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host...

MGASA-2026-0092 Updated python-tornado packages fix security vulnerabilities

Tornado vulnerable to Header Injection and XSS via reason argument. CVE-2025-67724 Tornado is Vulnerable to Quadratic DoS via Repeated Header Coalescing. CVE-2025-67725 Tornado is Vulnerable to Quadratic DoS via Crafted Multipart Parameters. CVE-2025-67726...

Updated python-tornado packages fix security vulnerabilities

Tornado vulnerable to Header Injection and XSS via reason argument. CVE-2025-67724 Tornado is Vulnerable to Quadratic DoS via Repeated Header Coalescing. CVE-2025-67725 Tornado is Vulnerable to Quadratic DoS via Crafted Multipart Parameters. CVE-2025-67726...

Host Header Injection

github.com/zitadel/zitadel is vulnerable to Host Header Injection. The vulnerability is due to improper validation of the Forwarded or X-Forwarded-Host headers when generating password reset links, which allows an attacker to manipulate the link to a malicious domain and capture the reset code,...

RLSA-2026:7350 Important: nodejs:24 security update

Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language. Security Fixes: nodejs: Nodejs denial of service CVE-2026-21637 brace-expansion: brace-expansion: Denial of Service via unbounded brace range expansion...

The vulnerability of the LibSoup library for HTTP servers arises from the lack of measures to neutralize CRLF sequences, allowing attackers to inject arbitrary HTTP headers.

The vulnerability of the LibSoup library for HTTP servers relates to the lack of measures taken to neutralize CRLF sequences. Exploiting this vulnerability allows a remote attacker to inject arbitrary HTTP headers...

Ruby Rack 3.2.x < 3.2.6 Header Injection Vulnerability

The version of the Rack Ruby library installed on the remote host is 3.2.0 or later but prior to 3.2.6. It is, therefore, affected by a header injection vulnerability: - Rack::Multipart::Parser unfolds folded multipart part headers incorrectly, preserving embedded CRLF in parsed parameter values...

undici: Undici: HTTP header injection and request smuggling vulnerability

A flaw was found in undici, a Node.js HTTP/1.1 client. This vulnerability allows a remote attacker to inject malicious data into HTTP headers or prematurely end HTTP requests by sending specially crafted input to the upgrade option of client.request. This is possible because undici does not...

Important: Red Hat Security Advisory: nodejs:24 security update

An update for the nodejs:24 module is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each...

ruby: HTTP response splitting in WEBrick

Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients...

Important: nodejs:24 security update

Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language. Security Fixes: nodejs: Nodejs denial of service CVE-2026-21637 brace-expansion: brace-expansion: Denial of Service via unbounded brace range expansion...