CVE-2020-11535 json
An issue was discovered in ONLYOFFICE Document Server 5.5.0.
published 2020-04-15 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-3887
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.3%
- EPSS 2.3% chance of exploitation in 30 days, percentile 83%
- public exploits
- 0
- none known
Summary
An issue was discovered in ONLYOFFICE Document Server 5.5.0. An attacker can craft a malicious .docx file, and exploit XML injection to enter an attacker-controlled parameter into the x2t binary, to rewrite this binary and/or libxcb.so.1, and execute code on a victim's server.
Exploit prediction
2.32% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-91 XML Injection
References
-
github.com
/ONLYOFFICE/DocumentServer/blob/master/CHANGELOG.md#551
release-notes, third-party-advisory
-
gist.github.com
/andrewaeva/beb92d3d2f1c5672dbda5050e323f6a0
third-party-advisory
Sources
- CVE List CVE-2020-11535
- NVD CVE-2020-11535
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.