PT-2026-37221

Twenty is an open source CRM built with NestJS Node.js. In versions 1.18.0 and earlier, the SSRF protection in twenty-server's SecureHttpClientService can be bypassed using IPv4-mapped IPv6 addresses in URL IP literals. Node.js's URL parser normalizes IPv4-mapped IPv6 addresses to compressed hex...

RHCOS 4 : OpenShift Container Platform 4.15.28 (RHSA-2024:5442)

The remote Red Hat Enterprise Linux CoreOS 4 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:5442 advisory. - golang: net/http: golang: mime/multipart: golang: net/textproto: memory exhaustion in Request.ParseMultipartForm CVE-2023-45290 -...

n8n-mcp's IPv4-mapped IPv6 addresses bypass SSRF protection in validateUrlSync(), enabling full SSRF for SDK embedders

Impact In the SDK embedder path N8NDocumentationMCPServer constructor, getN8nApiClient, and validateInstanceContext, the synchronous URL validator in SSRFProtection.validateUrlSync had no IPv6 checks. IPv4-mapped IPv6 addresses such as http://::ffff:169.254.169.254 bypassed the cloud-metadata,...

PT-2026-36822

Name of the Vulnerable Software and Affected Versions n8n-MCP versions 2.47.4 through 2.47.13 Description The synchronous URL validator in SSRFProtection.validateUrlSync lacks IPv6 checks within the SDK embedder path, specifically affecting the N8NDocumentationMCPServer constructor,...

Medium: perl-Net-CIDR-Lite

Issue Overview: Net::CIDR::Lite versions before 0.23 for Perl does not validate IPv6 group count, which may allow IP ACL bypass. packipv6 does not check that uncompressed IPv6 addresses without :: have exactly 8 hex groups. Inputs like "abcd", "1:2:3", or "1:2:3:4:5:6:7" are accepted and produce...

CVE-2026-31630

In the Linux kernel, the following vulnerability has been resolved: rxrpc: proc: size address buffers for %pISpc output The AFRXRPC procfs helpers format local and remote socket addresses into fixed 50-byte stack buffers with "%pISpc". That is too small for the longest current-tree IPv6-with-port...

Fedora 42 : perl-Net-CIDR-Lite (2026-4b112416d8)

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-4b112416d8 advisory. This update addresses two security issues regarding incorrect handling of malformed IPv6 addresses: Fix IPv4 mapped IPv6 packed length CVE-2026-4019...

PT-2026-41172

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.0 Description A Server-Side Request Forgery SSRF bypass exists in the validate url function located in backend/open webui/retrieval/web/utils.py. The function calls validators.ipv6ip, private=True, but because...

CVE-2026-40199

Net::CIDR::Lite versions before 0.23 for Perl mishandles IPv4 mapped IPv6 addresses, which may allow IP ACL bypass. packipv6 includes the sentinel byte from packipv4 when building the packed representation of IPv4 mapped addresses like ::ffff:192.168.1.1. This produces an 18 byte value instead of...

EUVD-2026-21611

Net::CIDR::Lite versions before 0.23 for Perl mishandles IPv4 mapped IPv6 addresses, which may allow IP ACL bypass. packipv6 includes the sentinel byte from packipv4 when building the packed representation of IPv4 mapped addresses like ::ffff:192.168.1.1. This produces an 18 byte value instead of...

DEBIAN-CVE-2026-40199

Net::CIDR::Lite versions before 0.23 for Perl mishandles IPv4 mapped IPv6 addresses, which may allow IP ACL bypass. packipv6 includes the sentinel byte from packipv4 when building the packed representation of IPv4 mapped addresses like ::ffff:192.168.1.1. This produces an 18 byte value instead of...

CVE-2026-40199

Net::CIDR::Lite versions before 0.23 for Perl mishandles IPv4 mapped IPv6 addresses, which may allow IP ACL bypass. packipv6 includes the sentinel byte from packipv4 when building the packed representation of IPv4 mapped addresses like ::ffff:192.168.1.1. This produces an 18 byte value instead of...

CVE-2026-40199

Net::CIDR::Lite versions before 0.23 for Perl mishandles IPv4 mapped IPv6 addresses, which may allow IP ACL bypass. packipv6 includes the sentinel byte from packipv4 when building the packed representation of IPv4 mapped addresses like ::ffff:192.168.1.1. This produces an 18 byte value instead of...

CVE-2026-40199 Net::CIDR::Lite versions before 0.23 for Perl mishandles IPv4 mapped IPv6 addresses, which may allow IP ACL bypass

Net::CIDR::Lite versions before 0.23 for Perl mishandles IPv4 mapped IPv6 addresses, which may allow IP ACL bypass. packipv6 includes the sentinel byte from packipv4 when building the packed representation of IPv4 mapped addresses like ::ffff:192.168.1.1. This produces an 18 byte value instead of...

CVE-2026-40199

Net::CIDR::Lite versions before 0.23 for Perl mishandles IPv4 mapped IPv6 addresses, which may allow IP ACL bypass. packipv6 includes the sentinel byte from packipv4 when building the packed representation of IPv4 mapped addresses like ::ffff:192.168.1.1. This produces an 18 byte value instead of...

Net-CIDR-Lite 安全漏洞

Net-CIDR-Lite is a Perl module developed by Stig for processing CIDR addresses. Versions of Net-CIDR-Lite prior to 0.23 contained security vulnerabilities, which stemmed from improper handling of IPv4-mapped IPv6 addresses, potentially allowing bypasses in IP access control lists...

PT-2026-32049

Name of the Vulnerable Software and Affected Versions Net::CIDR::Lite versions prior to 0.23 Description Net::CIDR::Lite versions before 0.23 for Perl incorrectly handles IPv4 mapped IPv6 addresses, potentially allowing IP ACL bypass. The pack ipv6 function includes a sentinel byte from pack ipv4...

CVE-2026-39409

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, ipRestriction does not canonicalize IPv4-mapped IPv6 client addresses e.g. ::ffff:127.0.0.1 before applying IPv4 allow or deny rules. In environments such as Node.js dual-stack, this can cause...

CVE-2026-39409

CVE-2026-39409 affects the Hono web application framework. The vulnerability lies in ipRestriction() not canonicalizing IPv4-mapped IPv6 addresses (e.g. ::ffff:127.0.0.1) before applying IPv4 allow/deny rules, which can cause IPv4 rules to fail to match in dual-stack environments (e.g., Node.js)....

CVE-2026-39409 Hono has incorrect IP matching in ipRestriction() for IPv4-mapped IPv6 addresses

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, ipRestriction does not canonicalize IPv4-mapped IPv6 client addresses e.g. ::ffff:127.0.0.1 before applying IPv4 allow or deny rules. In environments such as Node.js dual-stack, this can cause...