CVE-2021-43449

Severity Score

8.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

ONLYOFFICE all versions as of 2021-11-08 is vulnerable to Server-Side Request Forgery (SSRF). The document editor service can be abused to read and serve arbitrary URLs as a document.

Todas las versiones de ONLYOFFICE con fecha posterior al 08/11/2021 se ven afectadas por una vulnerabilidad Server-Side Request Forgery (SSRF). Se puede abusar del servicio de edición de documentos para leer y servir URL arbitrarias como documento.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

Poc

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2021-11-08 CVE Reserved
2023-01-23 CVE Published
2025-03-30 EPSS Updated
2025-04-02 CVE Updated
2025-04-02 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-918: Server-Side Request Forgery (SSRF)

CAPEC

References (3)

URL	Tag	Source
https://github.com/ONLYOFFICE/server	Third Party Advisory

URL	Date	SRC
https://labs.nettitude.com/blog/exploiting-onlyoffice-web-sockets-for-unauthenticated-remote-code-execution	2025-04-02

URL	Date	SRC

URL	Date	SRC
https://www.onlyoffice.com	2023-01-31

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Onlyoffice Search vendor "Onlyoffice"		Server Search vendor "Onlyoffice" for product "Server"				<= 7.0.0.49 Search vendor "Onlyoffice" for product "Server" and version " <= 7.0.0.49"		-		Affected