CVE-2026-42346 Postiz: TOCTOU DNS rebinding bypasses all SSRF URL validation paths

Postiz is an AI social media scheduling tool. From version 2.16.6 to before version 2.21.7, all SSRF protections added in v2.21.4–v2.21.6 share a fundamental TOCTOU Time-of-Check-Time-of-Use vulnerability: isSafePublicHttpsUrl resolves DNS to validate the target IP, but subsequent fetch calls...

CVE-2026-42344 FastGPT: DNS rebinding TOCTOU bypass in isInternalAddress allows SSRF on all protected endpoints

FastGPT is an AI Agent building platform. In versions 4.14.11 and prior, FastGPT's isInternalAddress function in packages/service/common/system/utils.ts is vulnerable to DNS rebinding TOCTOU — Time-of-Check to Time-of-Use. The function resolves the hostname via dns.resolve4/dns.resolve6 and check...

CVE-2026-42344

FastGPT is an AI Agent building platform. In versions 4.14.11 and prior, FastGPT's isInternalAddress function in packages/service/common/system/utils.ts is vulnerable to DNS rebinding TOCTOU — Time-of-Check to Time-of-Use. The function resolves the hostname via dns.resolve4/dns.resolve6 and check...

PT-2026-39214

Name of the Vulnerable Software and Affected Versions Postiz versions 2.16.6 through 2.21.6 Description Postiz is an AI social media scheduling tool. A Time-of-Check-Time-of-Use TOCTOU issue exists where the isSafePublicHttpsUrl function resolves DNS to validate the target IP, but subsequent fetc...

CVE-2026-41688

Wallos is an open-source, self-hostable personal subscription tracker. In versions 4.8.4 and prior, the incomplete SSRF fix in Wallos validates webhook URLs via gethostbyname but passes the original hostname to cURL without CURLOPTRESOLVE pinning on 10 of 11 outbound HTTP endpoints, leaving a DNS...

EUVD-2026-28384

Wallos is an open-source, self-hostable personal subscription tracker. In versions 4.8.4 and prior, the incomplete SSRF fix in Wallos validates webhook URLs via gethostbyname but passes the original hostname to cURL without CURLOPTRESOLVE pinning on 10 of 11 outbound HTTP endpoints, leaving a DNS...

CVE-2026-41688 Incomplete fix for CVE-2026-33399: SSRF in Wallos

Wallos is an open-source, self-hostable personal subscription tracker. In versions 4.8.4 and prior, the incomplete SSRF fix in Wallos validates webhook URLs via gethostbyname but passes the original hostname to cURL without CURLOPTRESOLVE pinning on 10 of 11 outbound HTTP endpoints, leaving a DNS...

CVE-2026-41688

Wallos is an open-source, self-hostable personal subscription tracker. In versions 4.8.4 and prior, the incomplete SSRF fix in Wallos validates webhook URLs via gethostbyname but passes the original hostname to cURL without CURLOPTRESOLVE pinning on 10 of 11 outbound HTTP endpoints, leaving a DNS...

CVE-2026-41688 Incomplete fix for CVE-2026-33399: SSRF in Wallos

Wallos is an open-source, self-hostable personal subscription tracker. In versions 4.8.4 and prior, the incomplete SSRF fix in Wallos validates webhook URLs via gethostbyname but passes the original hostname to cURL without CURLOPTRESOLVE pinning on 10 of 11 outbound HTTP endpoints, leaving a DNS...

CVE-2026-42194

Admidio is an open-source user management solution. Prior to version 5.0.9, the incomplete SSRF fix in Admidio's fetchmetadata.php validates the resolved IP address but passes the original hostname-based URL to curlinit, leaving a DNS rebinding TOCTOU window that allows redirecting requests to...

CVE-2026-42194 Incomplete fix for CVE-2026-32812: SSRF in admidio

Admidio is an open-source user management solution. Prior to version 5.0.9, the incomplete SSRF fix in Admidio's fetchmetadata.php validates the resolved IP address but passes the original hostname-based URL to curlinit, leaving a DNS rebinding TOCTOU window that allows redirecting requests to...

EUVD-2026-28296

Admidio is an open-source user management solution. Prior to version 5.0.9, the incomplete SSRF fix in Admidio's fetchmetadata.php validates the resolved IP address but passes the original hostname-based URL to curlinit, leaving a DNS rebinding TOCTOU window that allows redirecting requests to...

CVE-2026-42194 Incomplete fix for CVE-2026-32812: SSRF in admidio

Admidio is an open-source user management solution. Prior to version 5.0.9, the incomplete SSRF fix in Admidio's fetchmetadata.php validates the resolved IP address but passes the original hostname-based URL to curlinit, leaving a DNS rebinding TOCTOU window that allows redirecting requests to...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF through the FilterOutboundURL process. An attacker can access internal network resources and retrieve sensitive information by exploiting DNS rebinding to bypass outbound URL filtering. This is only...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF through the FilterOutboundURL process. An attacker can access internal network resources and retrieve sensitive information by exploiting DNS rebinding to bypass outbound URL filtering. This is only...

PT-2026-38445

Wallos is an open-source, self-hostable personal subscription tracker. In versions 4.8.4 and prior, the incomplete SSRF fix in Wallos validates webhook URLs via gethostbyname but passes the original hostname to cURL without CURLOPT RESOLVE pinning on 10 of 11 outbound HTTP endpoints, leaving a DN...

rmcp Streamable HTTP server transport has a DNS rebinding vulnerability

Summary Prior to version 1.4.0, the rmcp crate's Streamable HTTP server transport crates/rmcp/src/transport/streamablehttpserver/ did not validate the incoming Host header. This allowed a malicious public website, via a DNS rebinding attack, to send authenticated requests to an MCP server running...

GHSA-W7RC-VVGX-PJ45 Duplicate Advisory: OpenClaw: Browser SSRF hostname validation could be bypassed by DNS rebinding

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-xq94-r468-qwgj. This link is maintained to preserve external references. Original Description OpenClaw before 2026.4.10 contains a server-side request forgery vulnerability in browser navigation policy that allo...

CVE-2026-43582

OpenClaw before 2026.4.10 contains a server-side request forgery vulnerability in browser navigation policy that allows attackers to bypass hostname validation through DNS rebinding attacks. Attackers can exploit inconsistent hostname resolution between validation and actual network requests to...

CVE-2026-43582 OpenClaw < 2026.4.10 - DNS Rebinding SSRF via Hostname Validation Bypass

OpenClaw before 2026.4.10 contains a server-side request forgery vulnerability in browser navigation policy that allows attackers to bypass hostname validation through DNS rebinding attacks. Attackers can exploit inconsistent hostname resolution between validation and actual network requests to...