Tugtainer: OIDC login remains accessible when OIDC_ENABLED is false
Tugtainer is a self-hosted app for automating updates of Docker containers. Prior to version 1.30.3, Tugtainer's OIDC authentication can still be initiated even when OIDC_ENABLED=false. The /auth/oidc/enabled endpoint correctly reports that OIDC is disabled. However, a direct request to /auth/oidc/login still starts the OIDC login flow, returns HTTP 302, sets an oidc_state cookie, and redirects the user to the configured OIDC authorization endpoint. This bypasses the intended OIDC disable switch. This issue has been patched in version 1.30.3.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-55181
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 13:15 UTC · Revision 1
Source evidence
Tugtainer: OIDC login remains accessible when OIDC_ENABLED is false
core-osv · Original sourcePublished 30 Sept 2026, 16:57 UTC
Tugtainer is a self-hosted app for automating updates of Docker containers. Prior to version 1.30.3, Tugtainer's OIDC authentication can still be initiated even when OIDC_ENABLED=false. The /auth/oidc/enabled endpoint correctly reports that OIDC is disabled. However, a direct request to /auth/oidc/login still starts the OIDC login flow, returns HTTP 302, sets an oidc_state cookie, and redirects the user to the configured OIDC authorization endpoint. This bypasses the intended OIDC disable switch. This issue has been patched in version 1.30.3.
osv:CVE-2026-55181
Complete source record
{
"id": "58b7c1873384d7aabccdbd886a281322dafe9d216647799eec284b9f2756a094",
"url": "https://osv.dev/vulnerability/CVE-2026-55181",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Tugtainer: OIDC login remains accessible when OIDC_ENABLED is false",
"summary": "Tugtainer is a self-hosted app for automating updates of Docker containers. Prior to version 1.30.3, Tugtainer's OIDC authentication can still be initiated even when OIDC_ENABLED=false. The /auth/oidc/enabled endpoint correctly reports that OIDC is disabled. However, a direct request to /auth/oidc/login still starts the OIDC login flow, returns HTTP 302, sets an oidc_state cookie, and redirects the user to the configured OIDC authorization endpoint. This bypasses the intended OIDC disable switch. This issue has been patched in version 1.30.3.",
"evidence": "osv:CVE-2026-55181",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2026-55181",
"aliases": [
"CVE-2026-55181",
"GHSA-rg7c-vpfp-2w43"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/quenary/tugtainer",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "1d9893777086ddf3aefd32d2430db98e48f85125"
},
{
"fixed": "76371db679334b002d4af544b0f3b8587ad86f52"
}
],
"database_specific": {
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{
"fixed": "1.30.3"
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"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
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"fixed": "76371db679334b002d4af544b0f3b8587ad86f52"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "1d9893777086ddf3aefd32d2430db98e48f85125"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v1.30.3"
}
]
}
}
],
"versions": [
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55181.json"
}
}
],
"modified": "2026-10-28T02:30:28.958150984Z",
"provider": "osv",
"references": [
"https://github.com/Quenary/tugtainer/releases/tag/v1.30.3",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55181.json",
"https://github.com/Quenary/tugtainer/security/advisories/GHSA-rg7c-vpfp-2w43",
"https://nvd.nist.gov/vuln/detail/CVE-2026-55181",
"https://github.com/Quenary/tugtainer/commit/76371db679334b002d4af544b0f3b8587ad86f52"
],
"provider_metadata": {
"cwe_ids": [
"CWE-284"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55181.json"
}
},
"related_cves": [
{
"value": "CVE-2026-55181",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 495753,
"published_at": "2026-09-30T16:57:15.306+00:00"
}