Webstudio through 0.296.0 contains an unauthenticated server-side request forgery vulnerability in the /cgi/image, /cgi/video, and /cgi/asset proxy routes when RESIZE_ORIGIN environment variable is unset. Attackers can supply arbitrary URLs to these endpoints to read cloud instance metadata, access internal services, and perform network reconnaissance on the instance infrastructure.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

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.

Key SSVC decision points have not yet been added.

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

Vendor Product Default status Versions
webstudio-is webstudio unaffected
Version Status Constraints
0 affected ≤ 0.296.0

No data.

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Project Subscriptions

Vendors Products
Webstudio Subscribe
Ultimate Loan Manager 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/webstudio-is/webstudio cve-icon cve-icon
https://github.com/webstudio-is/webstudio/blob/55920c57c4d3e128a0fa48fceabbbc3a1d73f1ef/apps/builder/app/routes/cgi.asset.$.ts cve-icon cve-icon
https://github.com/webstudio-is/webstudio/blob/55920c57c4d3e128a0fa48fceabbbc3a1d73f1ef/apps/builder/app/routes/cgi.image.$.ts cve-icon cve-icon
https://github.com/webstudio-is/webstudio/blob/55920c57c4d3e128a0fa48fceabbbc3a1d73f1ef/apps/builder/app/routes/cgi.video.$.ts cve-icon cve-icon
https://github.com/webstudio-is/webstudio/issues/5816 cve-icon cve-icon
https://www.vulncheck.com/advisories/webstudio-through-0.296.0-ssrf-via-cgi-proxy-routes cve-icon cve-icon
History

Sat, 05 Sep 2026 10:15:00 +0000

Type Values Removed Values Added
Description Webstudio through 0.296.0 contains an unauthenticated server-side request forgery vulnerability in the /cgi/image, /cgi/video, and /cgi/asset proxy routes when RESIZE_ORIGIN environment variable is unset. Attackers can supply arbitrary URLs to these endpoints to read cloud instance metadata, access internal services, and perform network reconnaissance on the instance infrastructure.
Title Webstudio through 0.296.0 SSRF via /cgi proxy routes
First Time appeared Webstudio
Webstudio ultimate Loan Manager
Weaknesses CWE-918
CPEs cpe:2.3:a:webstudio:ultimate_loan_manager:*:*:*:*:*:*:*:*
Vendors & Products Webstudio
Webstudio ultimate Loan Manager
References
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N'}

cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-05T09:59:08.747Z

Reserved: 2026-09-05T01:59:22.058Z

Link: CVE-2026-86119

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-05T10:16:43.157

Modified: 2026-09-05T10:16:43.157

Link: CVE-2026-86119

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-05T12:00:05Z

Weaknesses