sending old referer

A vulnerability in libcurl caused the HTTP Referer: header to persist even when explicitly cleared. While the documentation states that passing NULL to CURLOPTREFERER suppresses the header, the option failed to clear the internal state. As a result, the previous referrer string was erroneously...

CVE-2026-55766

A flaw was found in guzzlehttp/psr7, a PHP library for HTTP messages. This vulnerability allows a remote attacker to inject arbitrary header lines into serialized HTTP/1.x messages. The flaw stems from the library's failure to reject carriage return CR and line feed LF characters in HTTP start-li...

EUVD-2026-38458

guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Prior to 2.12.1, guzzlehttp/psr7 did not reject CR/LF characters in certain first-party HTTP start-line fields: the request method, protocol version, and response reason phrase. If an application placed attacker-controlled dat...

CLSA-2026-1782139078 python3: Fix of 3 CVEs

CVE-2026-0672: reject control characters in http.cookies Morsel keys, values, and parameters and in BaseCookie.output to prevent HTTP header injection via user-controlled cookie data - CVE-2026-3644: follow-up to CVE-2026-0672, rejecting control characters in the http.cookies.Morsel paths the...

EUVD-2026-38216

Apache NiFi 0.0.1 through 2.9.0 support building qualified URLs from one of several HTTP request headers that provide an alternative to the standard Host header without validating the values provided. Apache NiFi 1.6.0 introduced a configurable application property to restrict values provided in...

CVE-2024-51454: Improper Neutralization of HTTP Headers for Scripting Syntax

IBM Engineering Workflow Management 7.0.2 through 7.0.2 Interim Fix 035, 7.0.3 through 7.0.3 Interim Fix 017, and 7.1 through 7.1 Interim Fix 004 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an attacker to conduct various...

SUSE SLES15 Security Update : kubevirt (SUSE-SU-2026:2400-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2400-1 advisory. Update to version 1.7.4, fixes various go embedded security issues: - CVE-2025-47911: golang.org/x/net/html: various algorithms wit...

CRLF Injection

Overview Affected versions of this package are vulnerable to CRLF Injection in the start-line serialization of the Message class toString, parseRequest, and parseResponse. An attacker can inject header lines and split or smuggle HTTP messages by placing CR or LF characters into the request method...

Security Bulletin: IBM Engineering Lifecycle Management - Engineering Workflow Management is impacted by vulnerabilities Host Header Injection observed

Summary Vulnerabilities have been identified in Host Header Injection , which is used in IBM Engineering Lifecycle Management -Engineering Workflow Management Vulnerability Details CVEID:CVE-2024-51454 DESCRIPTION: IBM Engineering Workflow Management is vulnerable to HTTP header injection, caused...

NPM: undici vulnerable to HTTP header injection via Set-Cookie percent-decoding

NPM: undici vulnerable to HTTP header injection via Set-Cookie percent-decoding vulnerability discovered by ? in WordPress Npm undici versions 6.27.0...

GHSA-P88M-4JFJ-68FV undici vulnerable to HTTP header injection via Set-Cookie percent-decoding

Impact undici's cookie parser in parseSetCookie percent-decodes cookie values via qsUnescape, turning encoded sequences like %0D%0A, %00, %3B, and %3D into their literal byte equivalents. RFC 6265 §5.4 does not specify any decoding and browsers do not decode either. Applications that parse a...

CVE-2026-56020

The Webmin HTTP server miniserv.pl allows unauthenticated attackers to impersonate any user with a configured SSL client certificate by sending a forged HTTP header. A remote attacker can spoof certificate DNs and authenticate as any user. Fixed in 2.202...

CVE-2026-56020 Webmin HTTP header authentication bypass

The Webmin HTTP server miniserv.pl allows unauthenticated attackers to impersonate any user with a configured SSL client certificate by sending a forged HTTP header. A remote attacker can spoof certificate DNs and authenticate as any user. Fixed in 2.641...

Kirby: Request header injection in `Http\Remote`

TL;DR This vulnerability affects Kirby sites and plugins that use the Kirby\Http\Remote class including Remote::request, Remote::get, Remote::post, and similar helpers to send outgoing HTTP requests and that pass untrusted, user-controlled data into the headers option of such a request. By...

PT-2026-50711

Name of the Vulnerable Software and Affected Versions Webmin versions prior to 2.641 Description The Webmin HTTP server miniserv.pl improperly trusts a client-supplied HTTP header for SSL client certificate identity. This allows unauthenticated remote attackers to spoof certificate distinguished...

PT-2026-61803

Name of the Vulnerable Software and Affected Versions Heimdall affected versions not specified Description When operating in proxy mode, the software constructs the Forwarded HTTP header by inserting the Host header value from incoming requests without sanitizing commas or semicolons. This allows...

CVE-2026-56020: Authentication Bypass by Spoofing

The Webmin HTTP server miniserv.pl allows unauthenticated attackers to impersonate any user with a configured SSL client certificate by sending a forged HTTP header. A remote attacker can spoof certificate DNs and authenticate as any user. Fixed in 2.202...

PT-2026-50722

Name of the Vulnerable Software and Affected Versions Kirby versions prior to 4.9.4 Kirby versions prior to 5.4.4 Description Kirby sites and plugins using the KirbyHttpRemote class, including the functions Remote::request, Remote::get, and Remote::post, are susceptible to HTTP header injection...

CVE-2026-9679

A flaw was found in undici. The cookie parser in the parseSetCookie function incorrectly decodes cookie values, which is contrary to standard specifications. This vulnerability allows an attacker-controlled upstream to inject arbitrary HTTP response headers, such as Set-Cookie, Location, or...

Improper Handling Of HTTP Headers

hono is vulnerable to Improper Handling of HTTP Headers. The vulnerability is due to using Headers.set instead of Headers.append when processing repeated request headers, which allows multiple header values to be overwritten and truncated, potentially enabling attackers to bypass security control...