TI-2021-19376 Aliases CVE-2021-43449 GHSA-pw64-6v6v-94vp

ONLYOFFICE all versions as of 2021-11-08 is vulnerable to Server-Side Request Forgery…

HIGH 70CWE-918Published 2023-01-23 · Updated 2025-04-02

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01273 70th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:onlyoffice:server::::::::	up to 7.0.0.49	Vulnerable	ONLYOFFICE

cpe:2.3:a:onlyoffice:server:*:*:*:*:*:*:*:* Versions up to 7.0.0.49 Vulnerable ·ONLYOFFICE

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-43449
2026-10-03 Alias added: GHSA-pw64-6v6v-94vp

References

Exploit 1

https://labs.nettitude.com/blog/exploiting-onlyoffice-web-sockets-for-unauthenticated-remote-code-execution/

Advisory 2

TI-2021-19374 ONLYOFFICE all versions as of 2021-11-08 is affected by Incorrect Access Control. CVSS 3.1HIGH 7.5
TI-2021-19373 ONLYOFFICE all versions as of 2021-11-08 is vulnerable to Cross Site Scripting (XSS). CVSS 3.1MEDIUM 6.1
TI-2021-19375 ONLYOFFICE all versions as of 2021-11-08 is vulnerable to Improper Input Validation. CVSS 3.1MEDIUM 5.3
TI-2021-19372 ONLYOFFICE all versions as of 2021-11-08 is affected by Incorrect Access Control. CVSS 3.1CRITICAL 9.8
TI-2021-19371 ONLYOFFICE all versions as of 2021-11-08 is affected by Incorrect Access Control. CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences