CVE-2026-55883

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.

CVSS

No CVSS.

References

Link	Resource
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-6m68-r693-78qx

Configurations

No configuration.

History

25 Oct 2026, 15:10

Type	Values Removed	Values Added
Summary		(es) Tilt define entornos de desarrollo como código para aplicaciones de microservicios en Kubernetes. Desde 0.24.0 hasta 0.37.3, el WebSocket HUD de Tilt en /ws/view está protegido por un token CSRF, pero el token es proporcionado por el endpoint /API/websocket_token no autenticado y el actualizador acepta clientes que omiten un encabezado Origin. Cuando el HUD está expuesto en la red, un atacante que puede alcanzar el oyente puede abrir el WebSocket HUD y recibir el flujo de vista completo, incluyendo el estado de la sesión, el contenido de Tiltfile, los estados de los recursos y las actualizaciones continuas. Este problema está solucionado en la versión 0.37.4.

Information

Published : 2026-07-10 22:16

Updated : 2026-10-25 15:10

NVD link : CVE-2026-55883

Mitre link : CVE-2026-55883

CVE.ORG link : CVE-2026-55883

JSON object : View

Products Affected

No product.

CWE

CWE-345

Insufficient Verification of Data Authenticity

{"id": "CVE-2026-55883", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-55883", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-14T14:14:38.038851Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "LOW", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "tilt-dev", "product": "tilt", "versions": [{"status": "affected", "version": ">= 0.24.0, < 0.37.4"}]}]}], "published": "2026-07-10T22:16:44.287", "references": [{"url": "https://github.com/tilt-dev/tilt/commit/47393fba7f6ef5e305d5e814551feef8e4acbc0a", "source": "security-advisories@github.com"}, {"url": "https://github.com/tilt-dev/tilt/pull/6776", "source": "security-advisories@github.com"}, {"url": "https://github.com/tilt-dev/tilt/releases/tag/v0.37.4", "source": "security-advisories@github.com"}, {"url": "https://github.com/tilt-dev/tilt/security/advisories/GHSA-6m68-r693-78qx", "source": "security-advisories@github.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-345"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Tilt define entornos de desarrollo como c\u00f3digo para aplicaciones de microservicios en Kubernetes. Desde 0.24.0 hasta 0.37.3, el WebSocket HUD de Tilt en /ws/view est\u00e1 protegido por un token CSRF, pero el token es proporcionado por el endpoint /API/websocket_token no autenticado y el actualizador acepta clientes que omiten un encabezado Origin. Cuando el HUD est\u00e1 expuesto en la red, un atacante que puede alcanzar el oyente puede abrir el WebSocket HUD y recibir el flujo de vista completo, incluyendo el estado de la sesi\u00f3n, el contenido de Tiltfile, los estados de los recursos y las actualizaciones continuas. Este problema est\u00e1 solucionado en la versi\u00f3n 0.37.4."}], "lastModified": "2026-10-25T15:10:00.147", "sourceIdentifier": "security-advisories@github.com"}