CVE-2026-81099: timescale tiger-slack, заобикаляне на вход и права

Описание

Оригинално описание

tiger-slack started its MCP HTTP transport without enabling the host allow-list the underlying SDK provides. mcp/src/httpServer.ts called the shared httpServerFactory helper and never set the DNS-rebinding-protection option, so the transport accepted a request whatever host it named, and a page in a browser could point a name it controlled at the address the server was bound to and drive the locally reachable Slack MCP server through the visitor's browser. The fix passes the option explicitly alongside a dependency update; the update alone would not have closed it. The repository publishes no release that brackets the fix, so the affected boundary is the commit preceding it.

Засегнати продукти

• timescale tiger-slack: 23faf7ee7e7f73e5ea4f67e627c1aca94bba1f09; преди 23faf7ee7e7f73e5ea4f67e627c1aca94bba1f09

Вид слабост

• CWE-346 Грешка при валидиране на произхода (Origin)

История

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-81099
• https://nvd.nist.gov/vuln/detail/CVE-2026-81099
• https://github.com/timescale/tiger-slack
• https://github.com/timescale/tiger-slack/pull/146
• https://www.vulncheck.com/advisories/timescale-tiger-slack-dns-rebinding-via-disabled-host-header-allow-list