Security readout for executives and security teams
Plain-English summary
ONLYOFFICE Document Server’s Translate plugin had an escaping flaw in versions 6.1.x through 6.3.x before 6.3.0.72. The public record does not provide a severity score, confirmed impact, or exploitation evidence. Organizations using this plugin should verify version and update if exposed.
Executive priority
Treat this as a targeted hygiene update, not an emergency based on current evidence. Prioritize systems that are externally reachable, widely used for collaboration, or handle sensitive documents.
Technical view
CVE-2021-40864 states that the Translate plugin lacks escape calls for msg.data and text fields. The referenced upstream change and comparison point to version 6.3.0.72 as the corrected release boundary. The sources do not provide CVSS, CWE mapping, exploit details, or a complete impact statement.
Likely exposure
Exposure appears limited to ONLYOFFICE Document Server deployments using the Translate plugin in versions 6.1.x through 6.3.x before 6.3.0.72.
Exploitation context
CISA KEV is false, and the supplied sources do not state active exploitation or public exploit availability. The likely concern is unsafe rendering of unescaped plugin-controlled or message text, but exact attack preconditions are not documented.
Researcher notes
The public data is sparse: no CVSS, CWE, PoC, exploit status, or detailed affected CPEs are included. Analysis should remain bounded to the Translate plugin and the documented missing escaping of msg.data and text.
Mitigation direction
- Inventory ONLYOFFICE Document Server instances using the Translate plugin.
- Upgrade the Translate plugin to 6.3.0.72 or later where applicable.
- Review ONLYOFFICE vendor guidance for any additional remediation steps.
- Reduce exposure of document services that do not need public access.
Validation and detection
- Check installed Translate plugin versions on ONLYOFFICE Document Server systems.
- Confirm no deployed plugin version is below 6.3.0.72 within the affected range.
- Review change records for the referenced upstream fix.
- Monitor vendor advisories for any later clarification on impact or remediation.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-40864 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/ONLYOFFICE/plugin-translator/commit/2206c0179cb97e3b8b290a0ab5719b1f0f54542bCVE reference · x_refsource_MISC
- https://github.com/ONLYOFFICE/plugin-translator/compare/v6.3.0.71...v6.3.0.72CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.