CVE-2026-88001

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.5 until 0.11.1, server-side web fetches did not reapply WEBFETCHFILTERLIST or private-address controls to HTTP redirect destinations when AIOHTTPCLIENTALLOWREDIRECTS was enabled. An authenticated user...

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...

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...

CVE-2026-72916

Mastodon CVE-2026-72916 affects PrivateAddressCheck.private_address? in app/lib/private_address_check.rb, which incorrectly normalized IPv4-mapped IPv6 addresses and did not recognize IPv4-compatible IPv6 addresses with IPAddr#ipv4_compat?. This allowed an attacker to bypass ALLOWED_PRIVATE_ADDRE...

EUVD-2026-55839

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...

NPM: Ghost: Private IP filtering bypass to make server-side requests to internal services

NPM: Ghost: Private IP filtering bypass to make server-side requests to internal services vulnerability discovered by ? in WordPress Npm ghost versions = 6.0.9, = 6.21.0...

Ghost: Private IP filtering bypass to make server-side requests to internal services

Impact When making an external request, it is possible to bypass the IP filter that ensures the request isn't going to an internal service using an IPv6 literal which maps to a private IPv4 address. Vulnerable versions This vulnerability is present in Ghost from v6.0.9 up to v6.21.0. Patches...

GHSA-H6X2-583H-X99R Open WebUI: DNS Rebinding SSRF Bypass

Summary Open WebUI vetted user-supplied URLs by resolving the hostname once and rejecting private, loopback and link-local addresses, then let the HTTP client resolve that hostname again at connect time. An attacker who controls the authoritative DNS for a hostname they submit can answer with a...

PT-2026-60386

Name of the Vulnerable Software and Affected Versions Koel versions prior to 9.7.1 Description An authenticated user can perform a server-side request forgery SSRF by subscribing to a malicious podcast RSS feed. The application's outbound-URL guard AppHelpersNetwork::isPublicHost uses filter var...

PYSEC-2026-2481 flyto-core has SSRF guard bypass via IPv6 transition addresses (IPv4-mapped / 6to4 / NAT64) in validate_url_ssrf

Summary flyto-core's SSRF protection validateurlssrf / isprivateip in src/core/utils.py blocks private and metadata destinations by resolving the host and testing the resulting IP for membership in a hardcoded PRIVATEIPRANGES list. That list contains only the native RFC 1918 / loopback / link-loc...

CVE-2026-53944 Ghost: Private IP filtering bypass to make server-side requests to internal services

Ghost is a Node.js content management system. From 6.0.9 until 6.21.1, when making an external request, it is possible to bypass the IP filter that ensures the request isn't going to an internal service using an IPv6 literal which maps to a private IPv4 address. This vulnerability is fixed in...

CVE-2026-53945 Ghost: Server-side request forgery via DNS rebinding in external request handling

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-2026-45373 CodeWhale: SSRF‌ IPV6 bypass

CodeWhale is a DeepSeek + MiMo coding agent in terminal. Prior to 0.8.26, although SSRF is validated against hostnames that resolve to private IPv6 addresses, when providing the IPV6 in‌‌ URL‌ as http://::1, the SSRF defenses do not work. This vulnerability is fixed in 0.8.26...

EUVD-2026-32956

pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev100, the PREREQFUNCTION-based private IP check was not applied to HTTPRequest used by the parseurls API. An authenticated attacker can supply a URL pointing to an attacker-controlled server that responds with...

MCP Registry has an unauthenticated SSRF: HTTP namespace verification dials 6to4 / NAT64 / site-local IPv6 addresses, bypassing private-address allowlist

Summary The Registry's HTTP-based namespace verification POST /v0/auth/http, POST /v0.1/auth/http uses safeDialContext internal/api/handlers/v0/auth/http.go:67-110 to refuse dialling private/internal addresses when fetching the well-known public-key file from a publisher-supplied domain. The...

ssrfcheck Vulnerable to Server-Side Request Forgery (SSRF) and Incomplete List of Disallowed Inputs

Summary ssrfcheck v1.3.0 latest fails to block Server-Side Request Forgery attacks when the target private IP address is encoded as an IPv4-mapped IPv6 address e.g. http://::ffff:127.0.0.1/. The WHATWG URL parser built into Node.js silently normalizes the IPv4 notation inside the brackets to...

GHSA-J4RJ-2JR5-M439 ssrfcheck Vulnerable to Server-Side Request Forgery (SSRF) and Incomplete List of Disallowed Inputs

Summary ssrfcheck v1.3.0 latest fails to block Server-Side Request Forgery attacks when the target private IP address is encoded as an IPv4-mapped IPv6 address e.g. http://::ffff:127.0.0.1/. The WHATWG URL parser built into Node.js silently normalizes the IPv4 notation inside the brackets to...

CVE-2025-65513

fetch-mcp v1.0.2 and before is vulnerable to Server-Side Request Forgery SSRF vulnerability, which allows attackers to bypass private IP validation and access internal network resources...

Server-side Request Forgery (SSRF)

Overview mcp-markdownify-server is a Model Context Protocol MCP server that converts various file types and web content to Markdown format. It provides a set of tools to transform PDFs, images, audio files, web pages, and more into easily readable and shareable Markdown text. Affected versions of...

PT-2025-50273

Name of the Vulnerable Software and Affected Versions fetch-mcp versions 1.0.2 and earlier Description The software is susceptible to a Server-Side Request Forgery SSRF issue. This allows attackers to circumvent private IP validation and gain access to internal network resources. Recommendations...