Timescale tiger-slack DNS Rebinding via Disabled Host Header Allow-List
Published Aug 27, 2026
7.6
HIGHCVSS 4.0
EPSS 0.22%
Description
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.
Affected products
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- Version 0StatusaffectedConstraints
- Version StatusunaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Timescale | Tiger-Slack | unaffected |
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No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (3)
- https://github.com/timescale/tiger-slack product
- https://github.com/timescale/tiger-slack/pull/146 issue-trackingpatch
- https://www.vulncheck.com/advisories/timescale-tiger-slack-dns-rebinding-via-disabled-host-header-allow-list third-party-advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/timescale/tiger-slack | product | |
| https://github.com/timescale/tiger-slack/pull/146 | issue-trackingpatch | |
| https://www.vulncheck.com/advisories/timescale-tiger-slack-dns-rebinding-via-disabled-host-header-allow-list | third-party-advisory |
Change history (0)
No recorded changes yet.