CVE-2026-110652— ONLYOFFICE DocumentServer before 10.0.0 SSRF via downloadfile isInJwtToken Bypass
Quick assessment
Affected
ONLYOFFICE DocumentServer
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
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
Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| ONLYOFFICE | DocumentServer | 2.5.0< 10.0.0 |
affected |
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I. Basic Information for CVE-2026-110652
Vulnerability Information
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Vulnerability Title
ONLYOFFICE DocumentServer before 10.0.0 SSRF via downloadfile isInJwtToken Bypass
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| ONLYOFFICE | DocumentServer | 2.5.0 ~ 10.0.0 | - |
|
II. Public POCs for CVE-2026-110652
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-110652 (2)
Other References for CVE-2026-110652 (1)
-
https://github.com/ONLYOFFICE/DocumentServer/blob/master/CHANGELOG.md#1000 issue-tracking release-notes
IV. Related Vulnerabilities
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V. Comments for CVE-2026-110652
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