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Medium

Peppermint through 0.5.5 Authorization Bypass on the User Logout Endpoint

Type: advisorySources: OSV

Peppermint through 0.5.5 contains an authorization bypass vulnerability in the GET /api/v1/auth/user/:id/logout endpoint that allows authenticated attackers to delete sessions for any user by supplying arbitrary user IDs. Attackers can forcibly log out any user including administrators by calling the logout handler with another user's ID, since the endpoint performs no authorization checks to verify the caller owns the target account.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-85392
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 17:04 UTC · Revision 1

Source evidence

Peppermint through 0.5.5 Authorization Bypass on the User Logout Endpoint

core-osv · Original source

Published 3 Sept 2026, 18:54 UTC

Peppermint through 0.5.5 contains an authorization bypass vulnerability in the GET /api/v1/auth/user/:id/logout endpoint that allows authenticated attackers to delete sessions for any user by supplying arbitrary user IDs. Attackers can forcibly log out any user including administrators by calling the logout handler with another user's ID, since the endpoint performs no authorization checks to verify the caller owns the target account.

osv:CVE-2026-85392
Complete source record
{
  "id": "7cf6bc67afdfd23c1b6bcc8dfe1d1f68383cbc2d1491092d32eb98f8980f466d",
  "url": "https://osv.dev/vulnerability/CVE-2026-85392",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Peppermint through 0.5.5 Authorization Bypass on the User Logout Endpoint",
    "summary": "Peppermint through 0.5.5 contains an authorization bypass vulnerability in the GET /api/v1/auth/user/:id/logout endpoint that allows authenticated attackers to delete sessions for any user by supplying arbitrary user IDs. Attackers can forcibly log out any user including administrators by calling the logout handler with another user's ID, since the endpoint performs no authorization checks to verify the caller owns the target account.",
    "evidence": "osv:CVE-2026-85392",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-85392",
      "aliases": [
        "CVE-2026-85392"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/peppermint-lab/peppermint",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "71ae71ba78e1d605bc4b178342710cc7f1dc3714"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.5.5"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.5.5"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.5.5",
            "0.5.4.2",
            "0.5.3.2",
            "0.5.3.1",
            "0.5.2",
            "0.5.1",
            "0.4.8",
            "0.4.7",
            "0.4.6",
            "0.4.2",
            "0.4",
            "0.3.5",
            "0.3.4",
            "0.3.3",
            "0.3.2",
            "0.3",
            "0.2.3",
            "0.2.2",
            "0.2.1",
            "0.2",
            "0.1.9",
            "0.1.8.5",
            "0.1.7.8",
            "0.1.7.7",
            "0.1.7.5",
            "0.1.6",
            "0.1.5",
            "0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-85392.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.728308207Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85392.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-85392",
        "https://www.vulncheck.com/advisories/peppermint-through-0.5.5-authorization-bypass-on-the-user-logout-endpoint",
        "https://github.com/Peppermint-Lab/peppermint/issues/529",
        "https://github.com/Peppermint-Lab/peppermint",
        "https://github.com/Peppermint-Lab/peppermint/blob/0.5.5/apps/api/src/controllers/auth.ts"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-639"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85392.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-85392",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497681,
  "published_at": "2026-09-03T18:54:25.208+00:00"
}