Tilt defines dev environments as code for microservice apps on Kubernetes. From 0.24.0 through 0.37.3, the Tilt HUD WebSocket at /ws/view is gated by a CSRF token, but the token is served by the unauthenticated /api/websocket_token endpoint and the upgrader accepts clients that omit an Origin header. When the HUD is network-exposed, an attacker who can reach the listener can open the HUD WebSocket and receive the full view stream, including session state, Tiltfile contents, resource statuses, and continued updates. This issue is fixed in version 0.37.4.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00222.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
tilt-dev tilt affected
Version Status Constraints
>= 0.24.0, < 0.37.4 affected —

No data.

No data.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-6m68-r693-78qx Tilt: Cross-site WebSocket hijacking of the Tilt HUD stream
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/tilt-dev/tilt/commit/47393fba7f6ef5e305d5e814551feef8e4acbc0a cve-icon
https://github.com/tilt-dev/tilt/pull/6776 cve-icon
https://github.com/tilt-dev/tilt/releases/tag/v0.37.4 cve-icon
https://github.com/tilt-dev/tilt/security/advisories/GHSA-6m68-r693-78qx cve-icon
History

Mon, 13 Jul 2026 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Tilt-dev
Tilt-dev tilt
Vendors & Products Tilt-dev
Tilt-dev tilt

Fri, 10 Jul 2026 22:00:00 +0000

Type Values Removed Values Added
Description Tilt defines dev environments as code for microservice apps on Kubernetes. From 0.24.0 through 0.37.3, the Tilt HUD WebSocket at /ws/view is gated by a CSRF token, but the token is served by the unauthenticated /api/websocket_token endpoint and the upgrader accepts clients that omit an Origin header. When the HUD is network-exposed, an attacker who can reach the listener can open the HUD WebSocket and receive the full view stream, including session state, Tiltfile contents, resource statuses, and continued updates. This issue is fixed in version 0.37.4.
Title Tilt: Cross-site WebSocket hijacking of the Tilt HUD stream
Weaknesses CWE-345
References
Metrics cvssV4_0

{'score': 8.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-07-10T21:38:18.081Z

Reserved: 2026-06-17T16:59:42.759Z

Link: CVE-2026-55883

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-13T14:49:19Z

Weaknesses