{"api_version":"1","generated_at":"2026-10-22T07:31:11+00:00","cve":"CVE-2026-65827","urls":{"html":"https://cve.report/CVE-2026-65827","api":"https://cve.report/api/cve/CVE-2026-65827.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-65827","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-65827"},"summary":{"title":"Docmost: Unbounded ZIP decompression (zip-bomb) in page import allows denial of service","description":"Docmost is open-source collaborative wiki and documentation software. From 0.21.0 until 0.95.0, any authenticated workspace member with edit rights to a space can upload an archive to the page-import feature whose ZIP extraction routine does not limit total uncompressed size, per-entry size, or entry count. The extractor writes entries to the server temp directory and automatically extracts one nested ZIP, allowing an outer upload within the default 200 MB limit to expand by multiple GB. The resulting disk exhaustion can crash the import worker and degrade or take down the instance for all tenants. This issue is fixed in version 0.95.0.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-09-24 19:17:15","updated_at":"2026-09-24 20:17:29"},"problem_types":["CWE-400","CWE-409","CWE-770","CWE-400 CWE-400: Uncontrolled Resource Consumption","CWE-409 CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)","CWE-770 CWE-770: Allocation of Resources Without Limits or Throttling"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"6.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"6.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"url":"https://github.com/docmost/docmost/commit/04110884b4e90a43cc5b337e063d0b7493be5da7","name":"https://github.com/docmost/docmost/commit/04110884b4e90a43cc5b337e063d0b7493be5da7","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/docmost/docmost/releases/tag/v0.95.0","name":"https://github.com/docmost/docmost/releases/tag/v0.95.0","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/docmost/docmost/security/advisories/GHSA-frjw-66gr-799m","name":"https://github.com/docmost/docmost/security/advisories/GHSA-frjw-66gr-799m","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-65827","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65827","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"docmost","product":"docmost","version":"affected >= 0.21.0, < 0.95.0","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"65827","cve":"CVE-2026-65827","epss":"0.002950000","percentile":"0.197640000","score_date":"2026-09-25","updated_at":"2026-09-26 00:06:20"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-65827","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-09-24T19:22:03.264160Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-09-24T19:22:12.940Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"product":"docmost","vendor":"docmost","versions":[{"status":"affected","version":">= 0.21.0, < 0.95.0"}]}],"descriptions":[{"lang":"en","value":"Docmost is open-source collaborative wiki and documentation software. From 0.21.0 until 0.95.0, any authenticated workspace member with edit rights to a space can upload an archive to the page-import feature whose ZIP extraction routine does not limit total uncompressed size, per-entry size, or entry count. The extractor writes entries to the server temp directory and automatically extracts one nested ZIP, allowing an outer upload within the default 200 MB limit to expand by multiple GB. The resulting disk exhaustion can crash the import worker and degrade or take down the instance for all tenants. This issue is fixed in version 0.95.0."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-409","description":"CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-09-24T18:28:36.809Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/docmost/docmost/security/advisories/GHSA-frjw-66gr-799m","tags":["x_refsource_CONFIRM"],"url":"https://github.com/docmost/docmost/security/advisories/GHSA-frjw-66gr-799m"},{"name":"https://github.com/docmost/docmost/commit/04110884b4e90a43cc5b337e063d0b7493be5da7","tags":["x_refsource_MISC"],"url":"https://github.com/docmost/docmost/commit/04110884b4e90a43cc5b337e063d0b7493be5da7"},{"name":"https://github.com/docmost/docmost/releases/tag/v0.95.0","tags":["x_refsource_MISC"],"url":"https://github.com/docmost/docmost/releases/tag/v0.95.0"}],"source":{"advisory":"GHSA-frjw-66gr-799m","discovery":"UNKNOWN"},"title":"Docmost: Unbounded ZIP decompression (zip-bomb) in page import allows denial of service"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-65827","datePublished":"2026-09-24T18:28:36.809Z","dateReserved":"2026-07-22T23:16:47.752Z","dateUpdated":"2026-09-24T19:22:12.940Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-24 19:17:15","lastModifiedDate":"2026-09-24 20:17:29","problem_types":["CWE-400","CWE-409","CWE-770","CWE-400 CWE-400: Uncontrolled Resource Consumption","CWE-409 CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)","CWE-770 CWE-770: Allocation of Resources Without Limits or Throttling"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-09-24T19:22:03.264160Z","id":"CVE-2026-65827","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"65827","Ordinal":"1","Title":"Docmost: Unbounded ZIP decompression (zip-bomb) in page import a","CVE":"CVE-2026-65827","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"65827","Ordinal":"1","NoteData":"Docmost is open-source collaborative wiki and documentation software. From 0.21.0 until 0.95.0, any authenticated workspace member with edit rights to a space can upload an archive to the page-import feature whose ZIP extraction routine does not limit total uncompressed size, per-entry size, or entry count. The extractor writes entries to the server temp directory and automatically extracts one nested ZIP, allowing an outer upload within the default 200 MB limit to expand by multiple GB. The resulting disk exhaustion can crash the import worker and degrade or take down the instance for all tenants. This issue is fixed in version 0.95.0.","Type":"Description","Title":"Docmost: Unbounded ZIP decompression (zip-bomb) in page import a"}]}}}