CVE-2026-54450 ToolHive: SSRF guard misses IPv6 NAT64 ranges (64:ff9b::/96, 64:ff9b:1::/48), allowing metadata/internal access behind a NAT64 gateway

ToolHive is a utility designed to simplify the deployment and management of Model Context Protocol MCP servers. Prior to 0.29.1, networking.IsPrivateIP in pkg/networking/utilities.go omits the IPv6 NAT64 prefixes 64:ff9b::/96 and 64:ff9b:1::/48, so NAT64 addresses embedding private, loopback, or...

CVE-2026-48737

pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev101, isglobaladdress in src/pyload/core/utils/web/check.py relies on Python's global-address classification without examining IPv4 destinations embedded in 6to4 or NAT64 IPv6 addresses. A low-privileged user...

CVE-2026-48737

pyLoad (pyload-ng), a Python-based open-source download manager, has an SSRF guard bypass (CWE-918) in its is_global_address function. The guard relies on Python's ipaddress.IPv6Address.is_global, which classifies 6to4 (2002::/16) and NAT64 (64:ff9b::/96) transition prefixes as globally routable ...

CVE-2026-88896

EspoCRM before 10.0.4 is vulnerable to Server-Side Request Forgery (SSRF) via an IPv6 transition address bypass in HostCheck::ipAddressIsNotInternal(). The function strips ::ffff: (IPv4-mapped IPv6) prefixes but fails to recognize IPv6 transition addresses that embed private IPv4 addresses—NAT64 ...

CVE-2026-88896 EspoCRM before 10.0.4 SSRF via IPv6 Transition Address Bypass

EspoCRM before 10.0.4 is vulnerable to server-side request forgery. HostCheck::ipAddressIsNotInternal, which validates outbound URLs to block requests to internal/private IP addresses, strips ::ffff: IPv4-mapped IPv6 prefixes but does not recognize IPv6 transition addresses that embed private IPv...

EUVD-2026-72871

snipe-it versions before 8.7.0 contain a server-side request forgery vulnerability in the ExternalUrl validation rule that fails to detect IPv6 transition addresses encoding private IPv4 targets. Attackers with super-admin privileges can configure webhook URLs using NAT64, 6to4, or Teredo...

CVE-2026-85692 Nightingale 9.1.1 SSRF Guard Bypass via IPv6 Encoding

Nightingale n9e, as of commit 8362cbe main branch, confirmed 2026-08-27, contains a server-side request forgery vulnerability in the isPublicIP function in aiagent/tools/http.go, the SSRF guard for the httpfetch AI-agent tool. The function only unwraps standard IPv4-mapped ::ffff:a.b.c.d IPv6...

CVE-2026-85692 Nightingale 9.1.1 SSRF Guard Bypass via IPv6 Encoding

Nightingale n9e, as of commit 8362cbe main branch, confirmed 2026-08-27, contains a server-side request forgery vulnerability in the isPublicIP function in aiagent/tools/http.go, the SSRF guard for the httpfetch AI-agent tool. The function only unwraps standard IPv4-mapped ::ffff:a.b.c.d IPv6...

ip-address: ip-address: Server-Side Request Forgery via IPv4-mapped/NAT64 IPv6 address misclassification

A flaw was found in the ip-address library. This library, used for parsing and manipulating IPv4 and IPv6 addresses in JavaScript, is vulnerable to Server-Side Request Forgery SSRF due to incorrect classification of IPv4-mapped/NAT64 IPv6 addresses. An attacker could exploit this misclassificatio...

CVE-2026-79749

MCPHub is a unified hub for centrally managing and dynamically orchestrating multiple MCP servers/APIs into separate endpoints with flexible routing strategies. Prior to version 1.0.32, MCPHub's SSRF guard in src/utils/ssrf.ts uses a custom isBlockedIpv6 function that only checks for loopback,...

CVE-2026-79749 MCPHub: SSRF Guard Bypass via IPv6 Transition Addresses in URL Validation

MCPHub is a unified hub for centrally managing and dynamically orchestrating multiple MCP servers/APIs into separate endpoints with flexible routing strategies. Prior to version 1.0.32, MCPHub's SSRF guard in src/utils/ssrf.ts uses a custom isBlockedIpv6 function that only checks for loopback,...

CVE-2026-79749 MCPHub: SSRF Guard Bypass via IPv6 Transition Addresses in URL Validation

MCPHub is a unified hub for centrally managing and dynamically orchestrating multiple MCP servers/APIs into separate endpoints with flexible routing strategies. Prior to version 1.0.32, MCPHub's SSRF guard in src/utils/ssrf.ts uses a custom isBlockedIpv6 function that only checks for loopback,...

CVE-2026-82648

WWBN AVideo contains a server-side request forgery filter bypass vulnerability in the isSSRFSafeURL function that fails to normalize NAT64 addresses written in hexadecimal form. Attackers can bypass SSRF protections by supplying hex-encoded NAT64 addresses like 64:ff9b::a9fe:a9fe to reach cloud...

CVE-2026-82648

WWBN AVideo is vulnerable to a server-side request forgery (SSRF) filter bypass in the isSSRFSafeURL function. The root cause is a failure to normalize NAT64 addresses written in hexadecimal form . Attackers can bypass the SSRF protection by supplying hex-encoded NAT64 addresses such as 64:ff9b::...

EUVD-2026-68234

WWBN AVideo contains a server-side request forgery filter bypass vulnerability in the isSSRFSafeURL function that fails to normalize NAT64 addresses written in hexadecimal form. Attackers can bypass SSRF protections by supplying hex-encoded NAT64 addresses like 64:ff9b::a9fe:a9fe to reach cloud...

CVE-2026-82648 WWBN AVideo SSRF Filter Bypass via NAT64 Hex Address

WWBN AVideo contains a server-side request forgery filter bypass vulnerability in the isSSRFSafeURL function that fails to normalize NAT64 addresses written in hexadecimal form. Attackers can bypass SSRF protections by supplying hex-encoded NAT64 addresses like 64:ff9b::a9fe:a9fe to reach cloud...

PT-2026-83574

Name of the Vulnerable Software and Affected Versions WWBN AVideo affected versions not specified Description An issue exists in the isSSRFSafeURL function that fails to normalize NAT64 addresses written in hexadecimal form. This allows attackers to bypass server-side request forgery SSRF...

CVE-2026-55245

Bifrost is an enterprise AI gateway for routing requests to model providers. Prior to 1.5.17, the isPublicIP function in core/providers/utils/fetch.go, reached through FetchAndEncodeURL for Bedrock and Vertex image or document URLs, classifies Carrier-Grade NAT 100.64.0.0/10, IPv6 6to4 2002::/16,...

GHSA-W98G-5W9P-P3RC Bifrost's SSRF deny-list is incomplete: isPublicIP permits CGNAT, IPv6 6to4/NAT64, and site-local in FetchAndEncodeURL

Summary isPublicIP in core/providers/utils/fetch.go — the SSRF deny-list that gates FetchAndEncodeURL — does not reject several routable address ranges that map onto internal infrastructure. Carrier-Grade NAT 100.64.0.0/10, RFC 6598, IPv6 6to4 2002::/16, NAT64 64:ff9b::/96 and 64:ff9b:1::/48, and...

CVE-2026-55245 Bifrost: SSRF deny-list incomplete: isPublicIP permits CGNAT, IPv6 6to4/NAT64, and site-local in FetchAndEncodeURL

Bifrost is an enterprise AI gateway for routing requests to model providers. Prior to 1.5.17, the isPublicIP function in core/providers/utils/fetch.go, reached through FetchAndEncodeURL for Bedrock and Vertex image or document URLs, classifies Carrier-Grade NAT 100.64.0.0/10, IPv6 6to4 2002::/16,...