CVE-2026-55884

CRITICALPre-NVD 9.29.2—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 59% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
9.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.2Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Tilt defines dev environments as code for microservice apps on Kubernetes. From 0.20.8 through 0.37.3, the Tilt HUD HTTP server registers handlers on a gorilla/mux router with no authenticating middleware. When the HUD is bound to a non-loopback address, an unauthenticated network caller can trigger developer-defined resources, tamper with Tiltfile arguments, read full engine state including the session token, and invoke apiserver resources through the token-attaching /proxy handler. This issue is fixed in version 0.37.4.

CVSS v3
9.2
EG Score
9.2CRITICALmedium confidence
EG Risk
57
EG Risk 57/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity92% × 45%
Exploitation1% × 40%
Automatability100% × 15%
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

Published

June 19, 2026

Last Modified

July 29, 2026

Advisory Details (4)

Auto-updated Sep 15, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
githubMentions a patch (unverified)

Missing authentication on the network-exposed Tilt HUD server · Advisory · tilt-dev/tilt · GitHub

https://github.com/tilt-dev/tilt/security/advisories/GHSA-c73q-8xxr-rgqm
github_release Patch Available

v0.37.4

Patch available: tilt-dev/tilt v0.37.4

https://github.com/tilt-dev/tilt/releases/tag/v0.37.4
github_pr

fix: secure mutating and sensitive requests to HUD server

Fix merged in tilt-dev/tilt PR #6776 on 2026-06-15 — awaiting tagged release

https://github.com/tilt-dev/tilt/pull/6776
github_commit

commit 47393fba7f6e (tilt-dev/tilt)

Fix landed in tilt-dev/tilt commit 47393fba7f6e — awaiting tagged release

https://github.com/tilt-dev/tilt/commit/47393fba7f6ef5e305d5e814551feef8e4acbc0a

Vendor Advisories for CVE-2026-55884(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFix by version rangeDependents
github.com/tilt-dev/tilt—
  • 0.20.8 up to 0.37.4: fixed in 0.37.4
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 28× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 118 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:13 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
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  24. 2026-09-14 02:16 UTCEG score recompute
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  1. 2026-09-13 13:28 UTCEG score recompute
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  28. 2026-08-18 13:48 UTCEPSS rescore
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  74. 2026-07-23 03:20 UTCEG score recompute
  75. 2026-07-22 14:08 UTCEPSS rescore

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Same product

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Go:github.com/tilt-dev/tilt

Frequently asked(5)

What is CVE-2026-55884?
CVE-2026-55884 is a critical vulnerability published on June 19, 2026. Tilt defines dev environments as code for microservice apps on Kubernetes. From 0.20.8 through 0.37.3, the Tilt HUD HTTP server registers handlers on a gorilla/mux router with no authenticating middleware. When the HUD is bound to a non-loopback address, an unauthenticated network caller can…
When was CVE-2026-55884 disclosed?
CVE-2026-55884 was first published on June 19, 2026, with the most recent update on July 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55884 actively exploited?
CVE-2026-55884 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-55884?
CVE-2026-55884 has a CVSS base score of 9.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-55884?
A fix for CVE-2026-55884 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-55884 are linked in the Vendor Advisories panel on this page.

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