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Docmost: Unbounded ZIP decompression (zip-bomb) in page import allows denial of service

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-65827

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-65827

docmost

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "docmost",
    "product": "docmost",
    "versions": [
      {
        "status": "affected",
        "version": ">= 0.21.0, < 0.95.0"
      }
    ]
  }
]
Related CVEs
CVE-2026-65827

Source reference: /cveMetadata/cveId

Publisher severity

medium

Source reference: /containers/cna/metrics

Event
#1870 · Revision 1
Added to Heist Feed
Publisher date
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