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CVE-2026-55883— Tilt: Cross-site WebSocket hijacking of the Tilt HUD stream

Quick assessment

Affected
tilt-dev tilt
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Tilt Dev Tilt是Tilt Dev团队的一款持续集成与交付的微服务开发工具。 Tilt Dev Tilt 0.24.0版本至0.37.3版本存在输入验证错误漏洞，该漏洞源于CSRF令牌认证机制缺陷，未经身份验证的端点可分发令牌且WebSocket接受缺少Origin标头的客户端，导致网络暴露环境下攻击者可通过访问监听器打开HUD WebSocket获取完整视图流，包括会话状态、Tiltfile内容、资源状态及持续更新。

AI Predicted 5.3 Difficulty: Easy EPSS 0.26% · P17

Affected Version Matrix 1

VendorProduct Version RangeStatus
tilt-dev tilt >= 0.24.0, < 0.37.4 affected
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I. Basic Information for CVE-2026-55883

Vulnerability Information
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Vulnerability Title
Tilt: Cross-site WebSocket hijacking of the Tilt HUD stream
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
对数据真实性的验证不充分
Source: CVE Program / CVE List V5
Vulnerability Title
Tilt Dev Tilt 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tilt Dev Tilt是Tilt Dev团队的一款持续集成与交付的微服务开发工具。 Tilt Dev Tilt 0.24.0版本至0.37.3版本存在输入验证错误漏洞，该漏洞源于CSRF令牌认证机制缺陷，未经身份验证的端点可分发令牌且WebSocket接受缺少Origin标头的客户端，导致网络暴露环境下攻击者可通过访问监听器打开HUD WebSocket获取完整视图流，包括会话状态、Tiltfile内容、资源状态及持续更新。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
tilt-dev tilt >= 0.24.0, < 0.37.4 -

II. Public POCs for CVE-2026-55883

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III. Intelligence Information for CVE-2026-55883

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Patches & Fixes for CVE-2026-55883 (2)

Vendor Advisories for CVE-2026-55883 (1)

Vendor Pages for CVE-2026-55883 (1)

Same Patch Batch · tilt-dev · 2026-07-10 · 3 CVEs total

CVE-2026-55884 9.2 CRITICAL Tilt: Missing authentication on the network-exposed Tilt HUD server
CVE-2026-55882 Tilt: Unauthenticated pprof debug endpoints on the Tilt HUD server

IV. Related Vulnerabilities

Same product: tilt
Same vendor: tilt-dev
Same weakness: CWE-345