undertow: Undertow: Request Smuggling via Malformed HTTP Request Headers

A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform...

undertow: Undertow: Request Smuggling via Malformed HTTP Request Headers

A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform...

Unity Linux 20.1060e / 20.1070e Security Update: samba (UTSA-2026-017651)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017651 advisory. A flaw was found in Samba's libldb. Multiple, consecutive leading spaces in an LDAP attribute can lead to an out-of-bounds memory write, leading to a crash of the LD...

CVE-2026-39983

basic-ftp is an FTP client for Node.js. Prior to 5.2.1, basic-ftp allows FTP command injection via CRLF sequences \r\n in file path parameters passed to high-level path APIs such as cd, remove, rename, uploadFrom, downloadTo, list, and removeDir. The library's protectWhitespace helper only handle...

fast-jwt 加密问题漏洞

fast-jwt is a JSON Web Token implementation open-sourced by Nearform. Versions of fast-jwt up to 6.1.0 contained a vulnerability related to encryption. This vulnerability stemmed from the ^ anchor character in the publicKeyPemMatcher regular expression, which could be bypassed by leading spaces i...

Linux Distros Unpatched Vulnerability : CVE-2026-28369

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the...

EUVD-2026-16698

A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform...

HTTP Request Smuggling

Overview io.undertow:undertow-core is a Java web server based on non-blocking IO. Affected versions of this package are vulnerable to HTTP Request Smuggling due to incorrect handling of white-spaces in HTTP request headers. An attacker can gain unauthorized access to restricted information or...

GHSA-VQQJ-9CMV-HX43 Undertow is Vulnerable to HTTP Request/Response Smuggling

A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform...

Undertow is Vulnerable to HTTP Request/Response Smuggling

A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform...

DEBIAN-CVE-2026-28369

A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform...

CVE-2026-28369

A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform...

CVE-2026-28369

A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform...

CVE-2026-28369

Undertow contains a vulnerability where the first HTTP header line with leading spaces is stripped, violating HTTP standards and enabling request smuggling. Affected component: Undertow HTTP header parsing. Root cause: improper handling that trims leading spaces on the initial header line. Impact...

CVE-2026-28369

A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform...

CVE-2026-28369 Undertow: undertow: request smuggling via malformed http request headers

A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform...

CVE-2026-28369 Undertow: undertow: request smuggling via malformed http request headers

A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform...

Azure Linux 3.0 Security Update: samba (CVE-2021-20277)

The version of samba installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2021-20277 advisory. - A flaw was found in Samba's libldb. Multiple, consecutive leading spaces in an LDAP attribute can lead to an...

CVE-2025-55127

HackerOne community member Dao Hoang Anh yoyomiski has reported an improper neutralization of whitespace in the username when adding new users. A username with leading or trailing whitespace could be virtually indistinguishable from its legitimate counterpart when the username is displayed in the...

CVE-2025-55127

HackerOne community member Dao Hoang Anh yoyomiski has reported an improper neutralization of whitespace in the username when adding new users. A username with leading or trailing whitespace could be virtually indistinguishable from its legitimate counterpart when the username is displayed in the...