CVE-2026-55884 Details
Description
Tilt defines dev environments as code for microservice apps on Kubernetes. From 0.20.8 through 0.37.3, the Tilt HUD HTTP server registers handlers on a gorilla/mux router with no authenticating middleware. When the HUD is bound to a non-loopback address, an unauthenticated network caller can trigger developer-defined resources, tamper with Tiltfile arguments, read full engine state including the session token, and invoke apiserver resources through the token-attaching /proxy handler. This issue is fixed in version 0.37.4.
A vulnerability exists in the Tilt HUD HTTP server, specifically in versions 0.20.8 prior to 0.37.3. The server exposes sensitive endpoints without authentication, allowing network attackers to manipulate developer-defined resources, alter Tiltfile arguments, access the full engine state including the session token, and invoke resources on the Tilt API server via a proxy. This issue arises because the server's handlers are registered without authenticating middleware, and it can be exploited when the HUD is bound to a non-loopback address and is reachable over the network.
Users can upgrade to Tilt version 0.37.4, which addresses this vulnerability by adding the necessary authentication and securing the exposed endpoints. Instructions for upgrading Tilt are available in the Tilt documentation.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 10, 2026CISA-ADP
Assessed Jul 15, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/tilt-dev/tilt/commit/47393fba7f6ef5e305d5e814551feef8e4acbc0a | [email protected] | Source CodeVendor |
| https://github.com/tilt-dev/tilt/pull/6776 | [email protected] | Source CodeVendor |
| https://github.com/tilt-dev/tilt/releases/tag/v0.37.4 | [email protected] | Release NotesVendor |
| https://github.com/tilt-dev/tilt/security/advisories/GHSA-c73q-8xxr-rgqm | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-306 | Missing Authentication for Critical Function | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Tilt | >= 0.20.8, <= 0.37.3 (semver) |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 29, 2026 | CVE Modified | CISA-ADP |
| Jul 15, 2026 | CVE Modified | CISA-ADP |
| Jul 13, 2026 | CVE Modified | CISA-ADP |
| Jul 10, 2026 | New CVE Received | [email protected] |