VulnerabilityAnalyzed
CVE-2023-50883
ONLYOFFICE Docs before 8.0.1 allows XSS because a macro is an immediately-invoked function expression (IIFE), and therefore a sandbox escape is possible by directly calling the constructor of the Function object.
MEDIUM 6.1EPSS 0.61%
Does this matter?
Lower severity and a low EPSS score (0.61%). Track it; it rarely justifies an emergency change on its own.
Description
ONLYOFFICE Docs before 8.0.1 allows XSS because a macro is an immediately-invoked function expression (IIFE), and therefore a sandbox escape is possible by directly calling the constructor of the Function object. NOTE: this issue exists because of an incorrect fix for CVE-2021-43446.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.61% probability · 47th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- onlyoffice/document server
- Source
- cve@mitre.org
References
- https://www.onlyoffice.com/Product
- https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2023-027.txtExploit, Third Party Advisory
- https://www.syss.de/pentest-blog/cross-site-scripting-schwachstelle-in-onlyoffice-docs-syss-2023-027Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.