8.2High
CVE-2026-100391
MediaFlow Proxy through 2.4.9 contains a server-side request forgery vulnerability in the /proxy routes due to missing and incomplete destination validation in the d query parameter. Remote attackers can supply arbitrary internal URLs including loopback and cloud metadata endpoints to read full responses from the proxy server.
What this means for your business
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
What to do
- 1Ask your IT team or provider whether any of your systems use the affected product.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Not sure if your company is exposed?
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Scoring
- CVSS
- 8.2 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N- CVSS v4
- 8.8
- Weakness
- CWE-918
- Assigned by
- disclosure@vulncheck.com
Dates
- Published
- 2026-09-25
- Last modified
- 2026-09-25
- Sources
- NVD
References
- https://github.com/mhdzumair/mediaflow-proxy
- https://github.com/mhdzumair/mediaflow-proxy/blob/2.4.9/mediaflow_proxy/routes/proxy.py#L532-L569
- https://github.com/mhdzumair/mediaflow-proxy/commit/99f4af1153d4766420a098a232183cba1efdc560
- https://www.vulncheck.com/advisories/mediaflow-proxy-through-2.4.9-server-side-request-forgery-via-incomplete-validation