{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.26.0"
              },
              {
                "last_affected": "0.30.0"
              },
              {
                "fixed": "0.30.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "1696c6c41428f98c06fcaf8838d43bcbf784c413"
            },
            {
              "fixed": "2036c1ffc1b0a1e1fa6a473738c2a5ef520df67f"
            }
          ],
          "repo": "https://github.com/usememos/memos",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-613"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84203.json"
  },
  "details": "Memos versions 0.26.0 through 0.30.0 fail to revoke refresh tokens when a user changes their password, allowing attackers to maintain account access. An attacker with a stolen refresh token can call the RefreshToken RPC to obtain new access tokens and rotate the refresh token indefinitely, bypassing the password change security measure.",
  "id": "CVE-2026-84203",
  "modified": "2026-09-03T03:30:53.938206856Z",
  "published": "2026-09-01T15:18:58.062Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84203.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84203"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/memos-0.26.0-through-0.30.0-insufficient-session-expiration-on-password-change"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/usememos/memos"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/usememos/memos/blob/v0.30.0/server/auth/authenticator.go"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/usememos/memos/blob/v0.30.0/server/router/api/v1/user_service.go"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Memos 0.26.0 through 0.30.0 Insufficient Session Expiration on Password Change"
}