SSRF in Webstudio-Is Webstudio
CVE-2026-86119
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (46.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.006 · change: +0.002
Affected products
Weakness classification (CWE)
References
- github.com/webstudio-is/webstudio (product)
- github.com/webstudio-is/webstudio/blob/55920c57c4d3e128a0fa48fceabbbc3a1d73f1ef… (technical-description)
- github.com/webstudio-is/webstudio/blob/55920c57c4d3e128a0fa48fceabbbc3a1d73f1ef… (technical-description)
- github.com/webstudio-is/webstudio/blob/55920c57c4d3e128a0fa48fceabbbc3a1d73f1ef… (technical-description)
- github.com/webstudio-is/webstudio/issues/5816 (issue-tracking)
- www.vulncheck.com/advisories/webstudio-through-0.296.0-ssrf-via-cgi-proxy-routes (third-party-advisory)
Frequently asked questions
- What is CVE-2026-86119?
- CVE-2026-86119 is a high-severity vulnerability in Webstudio-Is Webstudio, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.6/10. Published 2026-09-05.
- How severe is CVE-2026-86119?
- High severity. CVSS v3 base score is 8.6 out of 10.