CVE-2026-110652: Server-Side Request Forgery (SSRF) in ONLYOFFICE DocumentServer
Description
ONLYOFFICE DocumentServer before 10.0.0 contains an unauthenticated server-side request forgery vulnerability in the /downloadfile/:docid endpoint that allows remote attackers to bypass the private-IP request-filtering-agent by exploiting the isInJwtToken flag when JWT verification is disabled in the default configuration. Attackers can submit a crafted request body containing an internal or loopback URL, which is treated as a DIRECT request skipping private-address filtering, causing the server to fetch and proxy back arbitrary private-network and cloud metadata content.
CVSS v4.0
Score 6.3medium
Affected software
ONLYOFFICE
DocumentServer
pkg:github/DocumentServerRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-14T13:07:55.831Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6acf84cf2cdf04f65681bb0a
Added to database: 10/14/2026, 13:34:07 UTC
Last updated: 10/14/2026, 13:34:07 UTC
Views: 1
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