MediaFlow Proxy through 2.4.9 Server-Side Request Forgery via Incomplete Validation (CVE-2026-100391) | HOL Guard CVE

High · CVSS 8.8CVE-2026-100391

MediaFlow Proxy through 2.4.9 Server-Side Request Forgery via Incomplete Validation

Answer in brief

CVE-2026-100391 records a High severity (CVSS 8.8) vulnerability in MediaFlow Proxy through 2.4.9 Server-Side Request Forgery via Incomplete Validation. The current sources do not mark it as known exploited. The current feed maps mhdzumair/mediaflow-proxy (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.8
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps mhdzumair/mediaflow-proxy (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
mhdzumair/mediaflow-proxygeneric	>=0 <=2.4.9	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for mhdzumair/mediaflow-proxy.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.