CVE-2026-118576
Stage File Proxy - Critical - Cross-site scripting - SA-CONTRIB-2026-286
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Stage File Proxy - Critical - Cross-site scripting - SA-CONTRIB-2026-286
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.
- Record
CVE-2026-118576- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-06
EUVDEUVD-2026-113688
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.
- Record
EUVD-2026-113688- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - Updated
- 2026-11-06
GitHub AdvisoriesGHSA-qrww-563x-vvf9
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting")...
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.
- Record
GHSA-qrww-563x-vvf9- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-06
NVD
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.
- Record
CVE-2026-118576- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-06
OSV
Stage File Proxy - Critical - Cross-site scripting - SA-CONTRIB-2026-286
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.
- Record
CVE-2026-118576- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-07
OSVDRUPAL-CONTRIB-2026-286 No score
Stage File Proxy is a general solution for getting production files on a development server on demand. It is not intended for usage on production sites.
The module doesn't sufficiently check file URL for malicious content when attempting to do fallback retrieval leading to a cross-site scripting vulnerability.
This vulnerability is mitigated by the fact this development module must be enabled on an attacker's target site, and the attacker must be able to upload a malicious file to the "origin" server configured for the module.
- Record
DRUPAL-CONTRIB-2026-286- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
drupal/stage_file_proxyPackagist:https://packages.drupal.org/8 |
before 3.1.7, 4.0.0 up to 4.0.1 | 3.1.74.0.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| severity | CVE List | |
| facts, severity | EUVD | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-118576 is a medium vulnerability (CVSS 6.5) in Drupal Stage File Proxy, published October 28, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.17%, the 6th percentile. Fixed in drupal/stage_file_proxy 3.1.7.