Vulnerability · Published Oct 30, 2026 · Assigned by drupal
CVE-2026-118576Stage File Proxy - Critical - Cross-site scripting - SA-CONTRIB-2026-286
Unrated
In plain English
A cross-site scripting in Stage File Proxy from Drupal. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 95.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Stage File Proxy allows Cross-Site Scripting (XSS). This issue affects Stage File Proxy versions: from 0.0.0 to 3.1.7, from 4.0.0 to 4.0.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist:https://packages.drupal.org/8 | drupal/stage_file_proxy | 3.1.7, 4.0.1 | DRUPAL-CONTRIB-2026-286 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Drupal | Stage File Proxy | 0.0.0 – before 3.1.74.0.0 – before 4.0.1 |
Weakness: CWE-79