Critical
Tilt: Missing authentication on the network-exposed Tilt HUD server
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-55884
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 12:42 UTC · Revision 1
Source evidence
Tilt: Missing authentication on the network-exposed Tilt HUD server
core-osv · Original sourcePublished 10 Jul 2026, 21:36 UTC
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.
osv:CVE-2026-55884
Complete source record
{
"id": "715f9e363c2687642e1980c4de46d8cbc1af1cd0ee6756aa2a98a8a8968fb29e",
"url": "https://osv.dev/vulnerability/CVE-2026-55884",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Tilt: Missing authentication on the network-exposed Tilt HUD server",
"summary": "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.",
"evidence": "osv:CVE-2026-55884",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2026-55884",
"aliases": [
"CVE-2026-55884",
"GHSA-c73q-8xxr-rgqm",
"GO-2026-5317"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/tilt-dev/tilt",
"type": "GIT",
"events": [
{
"introduced": "640fd1bdce052755388446d776e31de5ff7199e2"
},
{
"fixed": "0b591662e013ba2d551d4861009d7b3c2276c90e"
},
{
"fixed": "47393fba7f6ef5e305d5e814551feef8e4acbc0a"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0.20.8"
},
{
"fixed": "0.37.4"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "47393fba7f6ef5e305d5e814551feef8e4acbc0a"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "0b591662e013ba2d551d4861009d7b3c2276c90e"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v0.37.4"
}
]
}
}
],
"versions": [
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55884.json"
}
}
],
"modified": "2026-10-28T02:30:28.758790423Z",
"provider": "osv",
"references": [
"https://github.com/tilt-dev/tilt/releases/tag/v0.37.4",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55884.json",
"https://github.com/tilt-dev/tilt/security/advisories/GHSA-c73q-8xxr-rgqm",
"https://nvd.nist.gov/vuln/detail/CVE-2026-55884",
"https://github.com/tilt-dev/tilt/commit/47393fba7f6ef5e305d5e814551feef8e4acbc0a",
"https://github.com/tilt-dev/tilt/pull/6776"
],
"provider_metadata": {
"cwe_ids": [
"CWE-306"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55884.json"
}
},
"related_cves": [
{
"value": "CVE-2026-55884",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 495477,
"published_at": "2026-07-10T21:36:18.861+00:00"
}