CVE-2026-80347

mcp-fetch (npm package @kazuph/mcp-fetch ) through version 1.6.3 contains a Server-Side Request Forgery (SSRF) flaw in its isSafeUrl guard. When a target URL uses an IPv6 literal such as http://[::1]/, the parsed hostname retains the surrounding brackets. The net.isIP check returns zero for the b...

CVE-2026-80347 mcp-fetch through 1.6.3 Server-Side Request Forgery via Unstripped IPv6 Literal Brackets

mcp-fetch checks a fetch target against its SSRF guard without removing the brackets that surround an IPv6 literal. isSafeUrl reads the hostname from the parsed URL, which for a literal such as http://::1/ yields the bracketed string, and then tests it with net.isIP. That call returns zero for a...

BIT-MASTODON-2026-72916 Mastodon: SSRF Protection Bypass via IPv4-compatible IPv6 Addresses

Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.4.21, 4.5.14, 4.6.4, and 4.7.0, PrivateAddressCheck.privateaddress? in app/lib/privateaddresscheck.rb normalized IPv4-mapped IPv6 addresses but did not recognize IPv4-compatible IPv6 addresses with...

CVE-2026-74563

In the Linux kernel, the following vulnerability has been resolved: rds: tcp: hold the RCU lock across ipv6chkaddr in rdstcpladdrcheck rdstcpladdrcheck looks up a scoped IPv6 interface with devgetbyindexrcu, drops the RCU read-side lock, and only then passes the bare struct netdevice into...

CVE-2026-74563

In the Linux kernel, the following vulnerability has been resolved: rds: tcp: hold the RCU lock across ipv6chkaddr in rdstcpladdrcheck rdstcpladdrcheck looks up a scoped IPv6 interface with devgetbyindexrcu, drops the RCU read-side lock, and only then passes the bare struct netdevice into...

CVE-2026-74563

CVE-2026-74563 concerns the Linux kernel RDS TCP binding path. Ongoing code path in rds_tcp_laddr_check() looked up a scoped IPv6 interface with dev_get_by_index_rcu(), released the RCU read lock, and then passed the net_device into ipv6_chk_addr(). After rcu_read_unlock(), a concurrent RTM_DELLI...

Linux Distros Unpatched Vulnerability : CVE-2026-74563

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - rds: tcp: hold the RCU lock across ipv6chkaddr in rdstcpladdrcheck rdstcpladdrcheck looks up a scoped IPv6 interface with devgetbyindexrcu, drops the RCU...

CVE-2026-72916

Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.4.21, 4.5.14, 4.6.4, and 4.7.0-beta.1, PrivateAddressCheck.privateaddress? in app/lib/privateaddresscheck.rb normalized IPv4-mapped IPv6 addresses but did not recognize IPv4-compatible IPv6 addresses with...

EUVD-2026-39024

Ghost: Server-side request forgery via DNS rebinding in external request handling...

CVE-2026-16124 nextlevelbuilder GoClaw web_fetch web_shared.go isPrivateIP server-side request forgery

A security vulnerability has been detected in nextlevelbuilder GoClaw up to 3.15.0-beta.32. This affects the function CheckSSRF/isPrivateIP of the file internal/tools/webshared.go of the component webfetch. Such manipulation leads to server-side request forgery. The attack can be launched remotel...

CVE-2026-60105

Monsta FTP before 2.14.5 contains a server-side request forgery vulnerability in the fetchRemoteFile action caused by an incomplete IP blocklist check in the isBlockedIP function, which fails to detect embedded IPv4 addresses within IPv4-mapped IPv6 addresses. An unauthenticated attacker can obta...

GO-2026-5244 Gotenberg has an SSRF deny-list bypass in IsPublicIP via IPv6 6to4 / NAT64 / site-local prefixes in github.com/gotenberg/gotenberg

Gotenberg has an SSRF deny-list bypass in IsPublicIP via IPv6 6to4 / NAT64 / site-local prefixes in github.com/gotenberg/gotenberg...

CVE-2026-47389

Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.5.10, 4.4.17, and 4.3.23, when using Ruby versions older than 3.4, PrivateAddressCheck.privateaddress? returns false for IPv4-mapped IPv6 addresses ::ffff:a.b.c.d corresponding to some private IPv4 addresses,...

CVE-2026-47389 Mastodon: SSRF protection bypass on older Ruby versions

Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.5.10, 4.4.17, and 4.3.23, when using Ruby versions older than 3.4, PrivateAddressCheck.privateaddress? returns false for IPv4-mapped IPv6 addresses ::ffff:a.b.c.d corresponding to some private IPv4 addresses,...

CVE-2026-53945

Ghost is a Node.js content management system. From 6.0.9 until 6.21.1, Ghost’s private-IP check for outbound HTTP requests could be bypassed via DNS rebinding, allowing an attacker to coerce the Ghost server into reaching hosts on internal networks through features that issue external fetches. Th...

CVE-2026-49860

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.8.1, when a WebSocket connection was opened, Deno checked the destination hostname against --deny-net rules but did not re-check the IP addresses that hostname resolved to. An attacker-controlled script could use a specially...

SUSE CVE-2026-48860

Reliance on IP Address for Authentication vulnerability in Erlang/OTP ssl inettlsdist module allows unauthenticated bypass of the distribution-over-TLS LAN allowlist. The inettlsdist:checkip/1 function, which enforces a LAN allowlist for Erlang distribution over TLS, calls inet:sockname/1 instead...

EUVD-2026-36057

Reliance on IP Address for Authentication vulnerability in Erlang/OTP ssl inettlsdist module allows unauthenticated bypass of the distribution-over-TLS LAN allowlist. The inettlsdist:checkip/1 function, which enforces a LAN allowlist for Erlang distribution over TLS, calls inet:sockname/1 instead...

PT-2026-46304

Name of the Vulnerable Software and Affected Versions WebOb versions prior to 1.8.10 Description An open redirect occurs when the software normalizes the HTTP Location header to include the request hostname. The process involves parsing the redirect URL using Python's urllib.parse and joining it ...

CVE-2026-45310

CodeWhale is a DeepSeek + MiMo coding agent in terminal. Prior to 0.8.22, the fetchurl tool validates the initial URL's resolved IP address against a restricted-IP blocklist isrestrictedip to prevent SSRF attacks against internal services cloud metadata endpoints, localhost, private networks...