Streamable HTTP transport lacks DNS-rebinding (Host/Origin) protection

Summary MCP::Server::Transports::StreamableHTTPTransport the Rack-mountable Streamable HTTP transport in the mcp gem processes every incoming JSON-RPC request without ever inspecting the HTTP Host or Origin request headers. There is no AllowedHosts/AllowedOrigins allowlist and no DNS-rebinding...

Origin Validation Error

Overview Affected versions of this package are vulnerable to Origin Validation Error via the CORS origin validation process. An attacker can gain unauthorized access to sensitive data by crafting a subdomain that encodes their own workspace UUID and a victim's username, then tricking an...

Origin Validation Error

Overview Affected versions of this package are vulnerable to Origin Validation Error via the CORS origin validation process. An attacker can gain unauthorized access to sensitive data by crafting a subdomain that encodes their own workspace UUID and a victim's username, then tricking an...

Origin Validation Error

Overview Affected versions of this package are vulnerable to Origin Validation Error via the CORS origin validation process. An attacker can gain unauthorized access to sensitive data by crafting a subdomain that encodes their own workspace UUID and a victim's username, then tricking an...

Coder's workspace app CORS origin check can be bypassed via UUID-based subdomain spoofing

Summary Coder's subdomain-based workspace app proxy allowed the same-owner CORS check to be bypassed. When a workspace-name subdomain segment parsed as a UUID, the workspace was resolved by ID without confirming the URL's username matched the real owner, while the CORS middleware trusted the...

GHSA-5WG6-JMQ2-53PW Coder's workspace app CORS origin check can be bypassed via UUID-based subdomain spoofing

Summary Coder's subdomain-based workspace app proxy allowed the same-owner CORS check to be bypassed. When a workspace-name subdomain segment parsed as a UUID, the workspace was resolved by ID without confirming the URL's username matched the real owner, while the CORS middleware trusted the...

undici: undici: Information disclosure and data integrity issues due to incorrect Socks5ProxyAgent connection routing

A flaw was found in undici. When using Socks5ProxyAgent, undici incorrectly reuses a single connection pool across different origins. This can lead to cross-origin request routing, where sensitive credentials and data intended for one destination are sent to another. Consequently, responses from...

CVE-2026-14620

A flaw was found in webpack-dev-server. This vulnerability allows a remote attacker to exploit exposed internal developer endpoints, /webpack-dev-server/open-editor and /webpack-dev-server/invalidate, through cross-origin requests. By visiting a malicious website while the development server is...

undici: undici: Information disclosure and data integrity issues due to incorrect Socks5ProxyAgent connection routing

A flaw was found in undici. When using Socks5ProxyAgent, undici incorrectly reuses a single connection pool across different origins. This can lead to cross-origin request routing, where sensitive credentials and data intended for one destination are sent to another. Consequently, responses from...

PT-2026-56082

Name of the Vulnerable Software and Affected Versions Coder versions prior to 2.29.17 Coder versions prior to 2.32.7 Coder versions prior to 2.33.8 Coder versions prior to 2.34.2 Description The subdomain-based workspace app proxy allows a bypass of the same-owner Cross-Origin Resource Sharing CO...

cross-origin Digest auth state leak

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CVE-2026-14620

webpack-dev-server versions 5.2.5 and earlier expose two internal developer endpoints, /webpack-dev-server/open-editor and /webpack-dev-server/invalidate, that perform state-changing actions on any GET request without verifying that the request originated from the dev server's own page. Any websi...

CVE-2026-14620

webpack-dev-server versions 5.2.5 and earlier expose two internal developer endpoints, /webpack-dev-server/open-editor and /webpack-dev-server/invalidate, that perform state-changing actions on any GET request without verifying that the request originated from the dev server's own page. Any websi...

CVE-2026-14620

webpack-dev-server versions 5.2.5 and earlier expose two internal developer endpoints, /webpack-dev-server/open-editor and /webpack-dev-server/invalidate, that perform state-changing actions on any GET request without verifying that the request originated from the dev server's own page. Any websi...

CVE-2026-11856 cross-origin Digest auth state leak

Successfully using libcurl to do a transfer to a specific HTTP origin hostA with Digest authentication and then changing the origin to a different one hostB for a second transfer, reusing the same handle, makes libcurl wrongly pass on the Authorization: header field meant for hostA, to hostB...

CVE-2026-11856 cross-origin Digest auth state leak

Successfully using libcurl to do a transfer to a specific HTTP origin hostA with Digest authentication and then changing the origin to a different one hostB for a second transfer, reusing the same handle, makes libcurl wrongly pass on the Authorization: header field meant for hostA, to hostB...

CVE-2026-11856

A vulnerability exists in libcurl where reusing a handle for sequential transfers across different HTTP origins can lead to a sensitive information leak. If a transfer to hostA uses Digest authentication, libcurl may incorrectly forward the Authorization: header meant for hostA to a second transf...

SUSE CVE-2026-54673

electron-updater allows for automatic updates for Electron apps. Prior to 9.7.0, the HTTP redirect handler HttpExecutor.prepareRedirectUrlOptions only stripped a credential header whose key string matched exactly lowercase "authorization", exposing credentials. Other credential-bearing headers -...

SUSE SLED15 / SLES15 Security Update : python-tornado (SUSE-SU-2026:2726-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2726-1 advisory. This update for python-tornado fixes the following issues - CVE-2026-49853: authorization header forwarded...

PT-2026-55575

Name of the Vulnerable Software and Affected Versions webpack-dev-server versions prior to 5.2.6 Description Internal developer endpoints '/webpack-dev-server/open-editor' and '/webpack-dev-server/invalidate' perform state-changing actions on GET requests without verifying the request origin. Thi...