What is CVE-2020-11537?

CVE-2020-11537 is a critical-severity vulnerability in Onlyoffice Document Server, classified under SQL Injection. CVSS score: 9.8/10. Published 2020-04-15.

How severe is CVE-2020-11537?

Critical severity. CVSS v3 base score is 9.8 out of 10.

SQL Injection in Onlyoffice Document Server

CVE-2020-11537

A SQL Injection issue was discovered in ONLYOFFICE Document Server 5.5.0. An attacker can execute arbitrary SQL queries via injection to DocID parameter of Websocket API.

Vulnerability class: SQL Injection

Published 2020-04-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.015 (73.0th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Onlyoffice Document Server — versions 5.5.0

Weakness classification (CWE)

CWE-89 — SQL Injection

References

github.com/ONLYOFFICE/DocumentServer/blob/master/CHANGELOG.md (Third Party Advisory, Release Notes)
gist.github.com/andrewaeva/beb92d3d2f1c5672dbda5050e323f6a0 (Third Party Advisory)

Frequently asked questions

What is CVE-2020-11537?: CVE-2020-11537 is a critical-severity vulnerability in Onlyoffice Document Server, classified under SQL Injection. CVSS score: 9.8/10. Published 2020-04-15.
How severe is CVE-2020-11537?: Critical severity. CVSS v3 base score is 9.8 out of 10.