Cyber Resilience

CVE-2026-3526

Access Control in Geeks4Change File Access Fix ≤ 8.x-1.2

Access Control
Published
26 March 2026
Modified
31 March 2026
Patch / advisory
View advisory
CVSS Score v3.1 5.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS Score 0.0026 17th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2026-3526 is a medium-severity Incorrect Authorization (CWE-863) vulnerability in Geeks4Change File Access Fix. Its CVSS base score is 5.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 17th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and AC-4 (Information Flow Enforcement) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

Incorrect Authorization vulnerability in Drupal File Access Fix (deprecated) allows Forceful Browsing.This issue affects File Access Fix (deprecated): from 0.0.0 before 1.2.0.

CWE(s)
CWE-863

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1083 File and Directory Discovery Discovery
Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system.
attack.mitre.org →
Why these techniques?

Direct forceful browsing bypass enables unauthorized file/directory access on public-facing Drupal instance (T1190) and facilitates file/directory discovery (T1083).

Confidence: MEDIUM · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-3525Same product: Geeks4Change File Access Fix
CVE-2026-54563Shared CWE-863
CVE-2026-40515Shared CWE-863
CVE-2026-63733Shared CWE-863
CVE-2025-30743Shared CWE-863
CVE-2026-4262Shared CWE-863
CVE-2026-6343Shared CWE-863
CVE-2026-32228Shared CWE-863
CVE-2026-47998Shared CWE-863
CVE-2026-10106Shared CWE-863

Affected Assets

geeks4change
file access fix
≤ 8.x-1.2

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • AC-3 Access Enforcement
  • AC-4 Information Flow Enforcement
  • AC-6 Least Privilege
Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)
  • 5 hardening rules · 3 OS baselines
Validate
Prove the fix (OWASP ASVS)

—

Mitigating Controls (NIST 800-53 r5) AI

AC-3 Access Enforcement good match
prevent

Directly enforces authorization decisions on file resources to block forceful browsing of paths that should be restricted.

AC-4 Information Flow Enforcement good match
prevent

Enforces information flow rules between subjects and file objects so unauthorized direct requests are denied.

AC-6 Least Privilege partial match
prevent

Limits granted privileges on files so that even successful forceful browsing yields minimal unauthorized content.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.AA-05 mostly match
prevents

Defining, enforcing, and reviewing access authorizations and least privilege directly prevents incorrect authorization checks.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.15 Access control partial match
prevents

Requiring consistency between access rights and classification plus formal approval steps ensures that the authorization logic correctly distinguishes between entities that should and should not be granted access.

A.5.18 Access rights partial match
prevents

Enforcing policy-driven approval and role-change reviews stops incorrect or stale authorization decisions from remaining in effect after job changes or terminations.

A.8.3 Information access restriction partial match
prevents

By tying access rights to identity, device, location and classification, the control reduces the likelihood that an authorization decision will be based on an incorrect or bypassed policy.

References