FKIE_CVE-2026-52850

Vulnerability from fkie_nvd - Published: 2026-09-24 19:17 - Updated: 2026-09-29 04:17
Severity
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Summary
Docmost is open-source collaborative wiki and documentation software. Prior to 0.90.1, an authenticated workspace member who does not belong to a private space can call the transclusion / sync-block lookup API with a known sourcePageId and transclusionId pair because the lookup does not enforce private space membership before resolving the source page. The API can return confidential sync-block content and source page metadata even though the normal page APIs deny access to the same page. This issue is fixed in version 0.90.1.
References
security-advisories@github.comhttps://github.com/docmost/docmost/commit/830b5b4d458a1302f42c8b68bff9ff559f6eb342
security-advisories@github.comhttps://github.com/docmost/docmost/releases/tag/v0.90.1
security-advisories@github.comhttps://github.com/docmost/docmost/security/advisories/GHSA-5vhf-cgf2-c9cq
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "docmost",
          "vendor": "docmost",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.90.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Docmost is open-source collaborative wiki and documentation software. Prior to 0.90.1, an authenticated workspace member who does not belong to a private space can call the transclusion / sync-block lookup API with a known sourcePageId and transclusionId pair because the lookup does not enforce private space membership before resolving the source page. The API can return confidential sync-block content and source page metadata even though the normal page APIs deny access to the same page. This issue is fixed in version 0.90.1."
    }
  ],
  "id": "CVE-2026-52850",
  "lastModified": "2026-09-29T04:17:56.370",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-52850",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-29T03:08:11.300076Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-24T19:17:13.930",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/docmost/docmost/commit/830b5b4d458a1302f42c8b68bff9ff559f6eb342"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/docmost/docmost/releases/tag/v0.90.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/docmost/docmost/security/advisories/GHSA-5vhf-cgf2-c9cq"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        },
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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