CVE-2021-43448

MEDIUM 5.3CVE-2021-43448 · Published 23/01/2023 · updated 17/06/2026

In short

CVE-2021-43448 is a MEDIUM (CVSS 5.3) vulnerability affecting server (onlyoffice).
Chance of exploitation in the next 30 days (EPSS): 1.0%, higher than 63.2% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
server onlyoffice	`≤ 7.0.0.49`	No fix yet

Description

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.

References

ONLYOFFICE/server · Third Party Advisory
labs.nettitude.com/blog/exploiting-onlyoffice-web-sockets-for-unauthenticated-remote-code-execution · Exploit
onlyoffice.com · Product

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Package

Affected versions

Patched versions

server

onlyoffice

≤ 7.0.0.49

No fix yet

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