CVE-2026-55883
HIGHTilt: Cross-site WebSocket hijacking of the Tilt HUD stream
Title source: cnaDescription
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.
References (4)
Core 4
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/tilt-dev/tilt/security/advisories/GHSA-6m68-r693-78qx
X_Refsource_Misc x_refsource_misc
https://github.com/tilt-dev/tilt/pull/6776
X_Refsource_Misc x_refsource_misc
https://github.com/tilt-dev/tilt/commit/47393fba7f6ef5e305d5e814551feef8e4acbc0a
X_Refsource_Misc x_refsource_misc
https://github.com/tilt-dev/tilt/releases/tag/v0.37.4
Scores
CVSS v4
8.3
EPSS
0.0022
EPSS Percentile
12.9%
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-345
Status
published
Products (2)
tilt-dev/tilt
0.24.0 - 0.37.4Go
tilt-dev/tilt
>= 0.24.0, < 0.37.4
Published
Jul 10, 2026
Tracked Since
Jul 11, 2026