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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
ONLYOFFICE DocumentServer unaffected
Version Status Constraints
2.5.0 affected < 10.0.0

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Onlyoffice Subscribe
Documentserver Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/ONLYOFFICE/DocumentServer/blob/master/CHANGELOG.md#1000 cve-icon cve-icon
https://github.com/ONLYOFFICE/DocumentServer/releases/tag/v10.0.0 cve-icon cve-icon
https://www.vulncheck.com/advisories/onlyoffice-documentserver-before-ssrf-via-downloadfile-isinjwttoken-bypass cve-icon cve-icon
History

Wed, 14 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 14 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
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.
Title ONLYOFFICE DocumentServer before 10.0.0 SSRF via downloadfile isInJwtToken Bypass
First Time appeared Onlyoffice
Onlyoffice documentserver
Weaknesses CWE-918
CPEs cpe:2.3:a:onlyoffice:documentserver:*:*:*:*:*:*:*:*
Vendors & Products Onlyoffice
Onlyoffice documentserver
References
Metrics cvssV3_1

{'score': 4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N'}

cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-14T14:03:28.592Z

Reserved: 2026-10-14T13:07:55.831Z

Link: CVE-2026-110652

cve-icon Vulnrichment

Updated: 2026-10-14T14:03:22.598Z

cve-icon NVD

Status : Received

Published: 2026-10-14T14:17:43.983

Modified: 2026-10-14T14:17:43.983

Link: CVE-2026-110652

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses