What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 9.2 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-10 · updated 2026-10-25
• Weakness: CWE-306

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 products

• tilt-dev tilt: from 0.20.8, < 0.37.4

References

• https://github.com/tilt-dev/tilt/commit/47393fba7f6ef5e305d5e814551feef8e4acbc0a
• https://github.com/tilt-dev/tilt/pull/6776
• https://github.com/tilt-dev/tilt/releases/tag/v0.37.4
• https://github.com/tilt-dev/tilt/security/advisories/GHSA-c73q-8xxr-rgqm

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