CVE-2026-59814 (GCVE-0-2026-59814)

Vulnerability from cvelistv5 – Published: 2026-09-21 21:13 – Updated: 2026-09-21 21:13
VLAI
Title
Joplin: Stored XSS via inline-served note attachment on published shares
Summary
Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.7, Joplin Server's GET /shares/:id?resource_id= route serves a resource with the attacker-controlled mime value and omits Content-Disposition when the resource title is empty. A low-privileged user can publish an empty-title image/svg+xml attachment whose script executes when a victim opens the public share. By default, user content shares the Joplin Server application origin, allowing the script to access same-origin data and, when the victim is authenticated, perform actions with the victim's session, including reading administrative data and anti-CSRF tokens. Installations that configure USER_CONTENT_BASE_URL to a separate origin still execute the script, but on that separate user-content origin rather than the application origin. This issue is fixed in version 3.7.7.
Severity
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version CPE status
laurent22 joplin Affected: < 3.7.7
guessed Create a notification for this product.
Show details on NVD website
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          "value": "Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.7, Joplin Server\u0027s GET /shares/:id?resource_id= route serves a resource with the attacker-controlled mime value and omits Content-Disposition when the resource title is empty. A low-privileged user can publish an empty-title image/svg+xml attachment whose script executes when a victim opens the public share. By default, user content shares the Joplin Server application origin, allowing the script to access same-origin data and, when the victim is authenticated, perform actions with the victim\u0027s session, including reading administrative data and anti-CSRF tokens. Installations that configure USER_CONTENT_BASE_URL to a separate origin still execute the script, but on that separate user-content origin rather than the application origin. This issue is fixed in version 3.7.7."
        }
      ],
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            "baseScore": 7.6,
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      "problemTypes": [
        {
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            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
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              "type": "CWE"
            }
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      "providerMetadata": {
        "dateUpdated": "2026-09-21T21:13:17.395Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
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          "name": "https://github.com/laurent22/joplin/security/advisories/GHSA-mx98-7h4g-6gmh",
          "tags": [
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          "url": "https://github.com/laurent22/joplin/security/advisories/GHSA-mx98-7h4g-6gmh"
        },
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          "url": "https://github.com/laurent22/joplin/commit/920cd8f463bf9bbce9daa07581676123007118e5"
        }
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      "source": {
        "advisory": "GHSA-mx98-7h4g-6gmh",
        "discovery": "UNKNOWN"
      },
      "title": "Joplin: Stored XSS via inline-served note attachment on published shares"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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    "cveId": "CVE-2026-59814",
    "datePublished": "2026-09-21T21:13:17.395Z",
    "dateReserved": "2026-07-07T15:00:50.978Z",
    "dateUpdated": "2026-09-21T21:13:17.395Z",
    "state": "PUBLISHED"
  },
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        "descriptions": [
          {
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          }
        ],
        "id": "CVE-2026-59814",
        "lastModified": "2026-09-21T22:16:57.050",
        "metrics": {
          "cvssMetricV31": [
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                "confidentialityImpact": "HIGH",
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            "url": "https://github.com/laurent22/joplin/commit/920cd8f463bf9bbce9daa07581676123007118e5"
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        "vulnStatus": "Received",
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                "value": "CWE-79"
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            "source": "security-advisories@github.com",
            "type": "Primary"
          }
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      }
    }
  }
}



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