CVE-2026-87004

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Source
https://cve.org/CVERecord?id=CVE-2026-87004
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-87004.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-87004
Aliases
  • GHSA-crjc-6vc7-xrfh
Published
2026-09-30T17:01:24Z
Modified
2026-10-28T02:30:54Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Tugtainer: OIDC id_token claims accepted without signature/audience/expiry verification
Details

Tugtainer is a self-hosted app for automating updates of Docker containers. Prior to version 1.31.3, when the OIDC login flow completes, backend/modules/auth/providers/auth_oidc_provider.py decodes the id_token returned by the identity provider's token endpoint using jose.jwt.get_unverified_claims() instead of jwt.decode(). This skips signature verification, audience (aud) validation, issuer (iss) validation, and expiry (exp) checking entirely. The extracted claims (email/sub/preferred_username) are then used directly as the user_id for the resulting Tugtainer session. This issue has been patched in version 1.31.3.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-347"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87004.json"
}
References

Affected packages

Git / github.com/quenary/tugtainer

Affected ranges

Type
GIT
Repo
https://github.com/quenary/tugtainer
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
476948563a52e77f30c71279aee5e9e42778a7e2
Fixed
b55269b6a3bfd43b0f2f5bd5f137ee0c81b7c2e4
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "1.31.3"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "b55269b6a3bfd43b0f2f5bd5f137ee0c81b7c2e4"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v1.31.3",
            "range":  [
                {
                    "fixed":  "476948563a52e77f30c71279aee5e9e42778a7e2"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

v1.*
v1.0.0
v1.0.1
v1.0.2
v1.0.3
v1.1.0
v1.1.1
v1.1.2
v1.1.3
v1.1.4
v1.1.5
v1.1.6
v1.10.0
v1.11.0
v1.12.0
v1.12.1
v1.12.2
v1.13.0
v1.13.1
v1.14.0
v1.14.1
v1.14.2
v1.14.3
v1.14.4
v1.15.0
v1.15.1
v1.15.2
v1.16.0
v1.16.1
v1.17.0
v1.17.1
v1.17.2
v1.17.3
v1.17.4
v1.17.5
v1.18.0
v1.19.0
v1.2.0
v1.2.1
v1.2.2
v1.2.3
v1.20.0
v1.21.0
v1.21.1
v1.22.0
v1.23.0
v1.23.1
v1.24.0
v1.24.1
v1.25.0
v1.25.1
v1.26.0
v1.27.0
v1.28.0
v1.28.1
v1.28.2
v1.28.3
v1.29.0
v1.29.1
v1.3.0
v1.30.0
v1.30.1
v1.30.2
v1.30.3
v1.30.4
v1.30.5
v1.30.6
v1.30.7
v1.30.8
v1.30.9
v1.31.0
v1.31.1
v1.31.2
v1.4.0
v1.4.1
v1.4.2
v1.5.0
v1.5.1
v1.5.2
v1.5.3
v1.6.0
v1.7.0
v1.7.1
v1.8.0
v1.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-87004.json"