# CVE-2026-110176: File Force Download for Drupal 7 Access Bypass via Unconditional Download Headers

Status: published. Published: 2026-10-31. Updated: 2026-11-06.

The File Force Download module for Drupal 7 implements hook_file_download() to add a Content-Disposition header when a file URL carries the download query parameter. In Drupal 7, returning a non-empty header array from that hook is itself a grant of access to the file.



In versions 7.1.0 through 7.1.2, the module only delegated to other modules' hook_file_download() implementations when the file was in the private scheme. For every other scheme it returned its headers without any check. An unauthenticated visitor who appended download=1 to the URL of a file in the temporary:// scheme, or in a stream wrapper supplied by another module, could retrieve the file, overriding the access checks that would otherwise have applied. Files in the public and private schemes are not affected.

## Remediation

- workaround: Disable the File Force Download module, avoid keeping sensitive files in the temporary:// scheme or in stream wrappers provided by contributed modules, or block anonymous requests that carry a download parameter at the web server or WAF. (source: CNA: drupal)

## Affected products and versions

- Drupal / File Force Download (file_force): ≥ 7.1.0; < 7.1.3 (affected, semver). Source: CNA: drupal; platforms: Drupal 7

## Severity and prioritization

- CVSS 4.0: 8.7 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N; source: CNA: drupal

- CVSS 4.0: 8.7 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: mlhess@drupal.org

- CISA KEV: No listing in collected sources

- EPSS: 0.25% as of 2026-11-06; percentile 16.30%

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-863

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.herodevs.com/vulnerability-directory/cve-2026-110176 (CNA: drupal; third-party-advisory)

- https://d7es.tag1.com/security-advisories/file-force-download-critical-access-bypass (CNA: drupal; third-party-advisory)

- https://d7es.tag1.com/security-advisories/file-force-download-critical-access-bypass (mlhess@drupal.org)

- https://www.herodevs.com/vulnerability-directory/cve-2026-110176 (mlhess@drupal.org)

## Provenance

- CNA: drupal: https://www.cve.org/CVERecord?id=CVE-2026-110176; retrieved 2026-11-06; source updated 2026-11-06

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-110176; retrieved 2026-11-02; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-110176; retrieved 2026-11-06; source updated Not reported

Revision: 9f09f118e97f11046fee995e5425b63b5cb2089cf2ca02cd444600d9cb588c23

Canonical: https://y2.dev/cve/CVE-2026-110176

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- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

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