CVE-2026-55181 (GCVE-0-2026-55181)

Vulnerability from cvelistv5 – Published: 2026-09-30 16:57 – Updated: 2026-09-30 16:57
VLAI
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.
Severity
9.4 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
CWE
  • CWE-284 - Improper Access Control
Assigner
References
Impacted products
Vendor Product Version CPE status
Quenary tugtainer Affected: < 1.30.3
guessed Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "tugtainer",
          "vendor": "Quenary",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.30.3"
            }
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      ],
      "descriptions": [
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          "lang": "en",
          "value": "Tugtainer is a self-hosted app for automating updates of Docker containers. Prior to version 1.30.3, Tugtainer\u0027s 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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 9.4,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "CWE-284: Improper Access Control",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-30T16:57:15.306Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/Quenary/tugtainer/security/advisories/GHSA-rg7c-vpfp-2w43",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/Quenary/tugtainer/security/advisories/GHSA-rg7c-vpfp-2w43"
        },
        {
          "name": "https://github.com/Quenary/tugtainer/commit/76371db679334b002d4af544b0f3b8587ad86f52",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/Quenary/tugtainer/commit/76371db679334b002d4af544b0f3b8587ad86f52"
        },
        {
          "name": "https://github.com/Quenary/tugtainer/releases/tag/v1.30.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/Quenary/tugtainer/releases/tag/v1.30.3"
        }
      ],
      "source": {
        "advisory": "GHSA-rg7c-vpfp-2w43",
        "discovery": "UNKNOWN"
      },
      "title": "Tugtainer: OIDC login remains accessible when OIDC_ENABLED is false"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-55181",
    "datePublished": "2026-09-30T16:57:15.306Z",
    "dateReserved": "2026-06-16T15:20:43.086Z",
    "dateUpdated": "2026-09-30T16:57:15.306Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "tugtainer",
                "vendor": "Quenary",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 1.30.3"
                  }
                ]
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            ],
            "source": "security-advisories@github.com"
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        "cveTags": [],
        "descriptions": [
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            "lang": "en",
            "value": "Tugtainer is a self-hosted app for automating updates of Docker containers. Prior to version 1.30.3, Tugtainer\u0027s 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."
          }
        ],
        "id": "CVE-2026-55181",
        "lastModified": "2026-09-30T17:16:46.937",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "LOW",
                "baseScore": 9.4,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L",
                "version": "3.1"
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            "url": "https://github.com/Quenary/tugtainer/commit/76371db679334b002d4af544b0f3b8587ad86f52"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/Quenary/tugtainer/releases/tag/v1.30.3"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/Quenary/tugtainer/security/advisories/GHSA-rg7c-vpfp-2w43"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-284"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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