CVE-2025-3734 Stage File Proxy - Moderately critical - Denial of Service - SA-CONTRIB-2025-035

Medium 5.9 Published Updated

Attackers can cause denial of service in Drupal sites using Stage File Proxy by exploiting resource allocation flaws.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2025-3734?

CVE-2025-3734 is a medium-severity denial of service vulnerability in Drupal Stage File Proxy, published on 16 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Allocation of Resources Without Limits or Throttling vulnerability in Drupal Stage File Proxy allows Flooding.This issue affects Stage File Proxy: from 0.0.0 before 3.1.5.

Weakness: CWE-770

Which versions are affected by CVE-2025-3734?

It affects 1 product.

Linux distribution packages (1)
drupal/stage_file_proxy Packagist:https://packages.drupal.org/8All versions3.1.5

Products include Stage File Proxy Project Stage File Proxy.

How do I fix CVE-2025-3734?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2025-3734 being exploited?

There is no known exploitation of CVE-2025-3734 in the wild and no public exploit code.

Sources

Also known as DRUPAL-CONTRIB-2025-035, GHSA-6p94-34xm-5x7f.

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