Tilt: Unauthenticated pprof debug endpoints on the Tilt HUD server

## Summary The Tilt HUD server mounts Go's `net/http/pprof` handlers under `/debug` with no access control. When the HUD is network-exposed, an attacker can read process memory — including session and apiserver tokens — and hold the process under profiling. ## Details A blank import of `net/http/pprof` registers its handlers on `http.DefaultServeMux`, which the HUD controller mounts under `/debug` on both the web router and the apiserver listener. `/debug/pprof/heap` and `/goroutine` expose process memory, including the session token (also issued in the `Tilt-Token` cookie) and the apiserver loopback bearer token; `/profile` and `/trace` let a caller sample the process for an arbitrary duration. ## Impact An unauthenticated caller who can reach the listener can extract process memory — including the session and apiserver tokens — and degrade performance by holding the process under CPU profiling or tracing. The leaked tokens compound the missing-authentication finding on the same server. ### Conditions for exploitation - Affected version in `>= 0.19.5, <= 0.37.3`. - HUD (or apiserver) listener bound to a non-loopback address (`tilt up --host 0.0.0.0`, or `TILT_HOST` set). - Network reachability to the listener (default port `10350`). ### Not affected - The default loopback-only bind is not reachable from the network. ## Workarounds Use the default loopback bind (omit `--host`, unset `TILT_HOST`) so `/debug` is not remotely reachable. No complete workaround short of upgrading for non-loopback deployments.

Source published

19 Jun 2026 13:52:17 UTC

Source modified

25 Jun 2026 23:11:06 UTC

Observed here

24 Oct 2026 13:19:41 UTC

Source terms

GitHub Advisory Database · CC-BY-4.0

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V4 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N

Publisher rating · HIGH