CRITICALCVSS 9.8KNOWN EXPLOITED

CVE-2021-3199

CVE-2021-3199 updated by NVD

Published: 2026-10-08
Modified: 2026-11-04
Sources: cisa-kev, nvd

Summary

Directory traversal with remote code execution can occur in /upload in ONLYOFFICE Document Server before 5.6.3, when JWT is used, via a /.. sequence in an image upload parameter.

References

https://nvd.nist.gov/vuln/detail/CVE-2021-3199

Includes data from the CISA Known Exploited Vulnerabilities catalog.

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

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