CVE-2026-55884Network attack vector

Unauthenticated resource execution via unprotected HUD handlers

Published Jul 10, 2026 · Updated Jul 10, 2026

Missing authentication in the Tilt HUD HTTP server 0.20.8 through 0.37.3 allows remote attackers to trigger developer-defined resources. The gorilla/mux router registers sensitive and state-changing handlers without authentication, while cookieWrapper emits a session token but never validates it. Exploitation requires a non-loopback HUD bind and network access; it exposes engine state and permits resource triggering and Tiltfile-argument changes.

CVSS severity9.2
Critical
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in the Tilt HUD HTTP server 0.20.8 through 0.37.3 allows remote attackers to trigger developer-defined resources. The gorilla/mux router registers sensitive and state-changing handlers without authentication, while cookieWrapper emits a session token but never validates it. Exploitation requires a non-loopback HUD bind and network access; it exposes engine state and permits resource triggering and Tiltfile-argument changes.

The record

CVE
CVE-2026-55884
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
Tilt Dev
Product
Tilt
Classifications
CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.20.8, < 0.37.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Tilt Dev · Tiltversion=>= 0.20.8, < 0.37.4

Published CVSS scores

9.2GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
9.4GitLab Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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