CVE-2021-43448

ONLYOFFICE all versions as of 2021-11-08 is vulnerable to Improper Input Validation. A lack of input validation can allow an attacker to spoof the names of users who interact with a document, if the document id is known.

CVSS v3.1 NVD

5.3 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS

1.01% chance of exploitation in the next 30 days, 63rd percentile

Published

2023-01-23

Updated

2025-04-02

Proof-of-concept exploits (1)

• https://labs.nettitude.com/blog/exploiting-onlyoffice-web-sockets-for-unauthenticated-rem…

Security advisories

• https://www.onlyoffice.com
• ONLYOFFICE/server
• https://labs.nettitude.com/blog/exploiting-onlyoffice-web-sockets-for-unauthenticated-rem…

References

• CVE Record
• NVD entry