TLS hostname verification disabled when using Boring TLS backend

An inverted-boolean bug in lettre's boring-tls integration silently disables TLS hostname verification for callers using the default strict configuration. An on-path attacker presenting any chain-valid certificate for any domain can intercept SMTP submission, including PLAIN/LOGIN credentials and...

curl: TLS verifyhost bypass in rustls, mbedTLS, and wolfSSL when verifypeer=0

The now-well-known CURLOPTSSLVERIFYHOST-bypass-when-CURLOPTSSLVERIFYPEER=0 defect exists in three of curl's TLS backends: rustls EXPERIMENTAL, mbedTLS, and wolfSSL DNS hostnames only. The documented contract at docs/libcurl/opts/CURLOPTSSLVERIFYPEER.md:57-59: The check that the host name in the...

curl: HSTS multi-trailing-dot bypass-ish: possible incomplete fix for CVE-2022-30115

Hi all, Honestly, I'm not completely certain about this issue, but I think the CVE-2022-30115 fix "HSTS bypass via trailing dot" is incomplete: the same asymmetry exists for hostnames with two or more trailing dots, so http://example.com../ still gets sent in plaintext when there's a valid HSTS...

crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate

A flaw was found in golang. A remote attacker could exploit this vulnerability by providing a specially crafted certificate during the error string construction process within the HostnameError.Error function. This flaw, caused by unbounded string concatenation, leads to excessive resource...

SUSE-SU-2026:1843-1 Security update for log4j

This update for log4j fixes the following issues: - CVE-2026-34477: TLS connections vulnerable to interception due to incomplete hostname verification configuration checks bsc1262050. - CVE-2026-34479: silent log event loss due to improper XML escaping in Log4j1XmlLayout bsc1262091. -...

crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate

A flaw was found in golang. A remote attacker could exploit this vulnerability by providing a specially crafted certificate during the error string construction process within the HostnameError.Error function. This flaw, caused by unbounded string concatenation, leads to excessive resource...

CVE-2026-42260 Open-WebSearch: SSRF in `fetchWebContent` MCP tool: bracketed IPv6 literals and non-resolving hostname check bypass `isPrivateOrLocalHostname`

Open-WebSearch is a multi-engine MCP server, CLI, and local daemon for agent web search and content retrieval. Prior to 2.1.7, isPublicHttpUrl / assertPublicHttpUrl in src/utils/urlSafety.ts do not recognize bracketed IPv6 literals and do not resolve DNS, which combine to allow non-blind SSRF wit...

CVE-2026-42260 Open-WebSearch: SSRF in `fetchWebContent` MCP tool: bracketed IPv6 literals and non-resolving hostname check bypass `isPrivateOrLocalHostname`

Open-WebSearch is a multi-engine MCP server, CLI, and local daemon for agent web search and content retrieval. Prior to 2.1.7, isPublicHttpUrl / assertPublicHttpUrl in src/utils/urlSafety.ts do not recognize bracketed IPv6 literals and do not resolve DNS, which combine to allow non-blind SSRF wit...

CVE-2026-42260 Open-WebSearch: SSRF in `fetchWebContent` MCP tool: bracketed IPv6 literals and non-resolving hostname check bypass `isPrivateOrLocalHostname`

Open-WebSearch is a multi-engine MCP server, CLI, and local daemon for agent web search and content retrieval. Prior to 2.1.7, isPublicHttpUrl / assertPublicHttpUrl in src/utils/urlSafety.ts do not recognize bracketed IPv6 literals and do not resolve DNS, which combine to allow non-blind SSRF wit...

MAL-2026-3681 Malicious code in @catamania/ui-components (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 326cc4cf1fbe96c77b6340df59ebea040cdd522e3e4bc76471563190044cf53a The package declares a postinstall lifecycle hook "postinstall": "node postinstall.js" in package.json that runs automatically during npm install...

crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate

A flaw was found in golang. A remote attacker could exploit this vulnerability by providing a specially crafted certificate during the error string construction process within the HostnameError.Error function. This flaw, caused by unbounded string concatenation, leads to excessive resource...

CVE-2026-44659

Zen is a firefox-based browser. Prior to 1.19.12b, the ZEN Browser incorrectly truncates long hostnames in the address bar and shows only the attacker-controlled prefix of the subdomain, hiding the actual registrable domain eTLD+1. As a result, an attacker can craft extremely long malicious...

Unity Linux 20.1060e / 20.1070e Security Update: c-ares (UTSA-2026-017414)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017414 advisory. A flaw was found in c-ares library, where a missing input validation check of host names returned by DNS Domain Name Servers can lead to output of wrong hostnames...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: golang (UTSA-2026-016821)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-016821 advisory. Matching of hosts against proxy patterns can improperly treat an IPv6 zone ID as a hostname component. For example, when the NOPROXY environment variable is set to...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: golang (UTSA-2026-016818)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-016818 advisory. Within HostnameError.Error, when constructing an error string, there is no limit to the number of hosts that will be printed out. Furthermore, the error string is...

Heimdall 安全漏洞

Heimdall is an open-source identity recognition proxy and access control decision-making service developed by dadrus for cloud-native applications. Versions of Heimdall prior to 0.17.14 contained security vulnerabilities. These vulnerabilities stemmed from the use of hostname matching in a...

crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate

A flaw was found in golang. A remote attacker could exploit this vulnerability by providing a specially crafted certificate during the error string construction process within the HostnameError.Error function. This flaw, caused by unbounded string concatenation, leads to excessive resource...

BIT-THRIFT-2026-43869 Apache Thrift: TSSLTransportFactory.java hostname verification

Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift. This issue affects Apache Thrift: before 0.23.0. Users are recommended to upgrade to version 0.23.0, which fixes the issue...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation due to ineffective hostname verification in the TLS certificate validation. An attacker can bypass expected hostname checks by presenting a certificate signed by the trusted certificate authority but with...

OpenSearch has ineffective TLS certificate hostname verification

Description A regression was introduced in OpenSearch 2.18.0 that caused the plugins.security.ssl.transport.enforcehostnameverification setting to be ineffective. When this setting was enabled, OpenSearch did not verify that the hostname in a connecting node's TLS certificate matched the hostname...