Log in Start free

Vulnerability · Published Jul 10, 2026 · Assigned by GitHub_M

CVE-2026-55884Tilt: Missing authentication on the network-exposed Tilt HUD server

Critical 9.2

In plain English

A critical-severity missing authentication in tilt from tilt-dev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)9.2Critical
Exploit odds (30 days)0.5%top 57.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Gogithub.com/tilt-dev/tilt0.37.4GO-2026-5317
Gogithub.com/tilt-dev/tilt0.37.4GHSA-c73q-8xxr-rgqm

Affected products (as reported)

VendorProductVersions
tilt-dev tilt >= 0.20.8, < 0.37.4

Weakness: CWE-306 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

References