CVE-2026-3526Network attack vector

Unauthenticated file disclosure via incomplete access validation

Published Mar 26, 2026 · Updated Mar 26, 2026

Incorrect authorization in Drupal File Access Fix before 1.2.0 allows remote attackers to read protected files via direct requests. When an entity is first saved, the module does not always validate the entity's access rules before deciding whether attached files need private protection. The exposure persists only until the entity is saved a second time, which causes the module to apply the expected protection.

CVSS severity5.3
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Drupal File Access Fix before 1.2.0 allows remote attackers to read protected files via direct requests. When an entity is first saved, the module does not always validate the entity's access rules before deciding whether attached files need private protection. The exposure persists only until the entity is saved a second time, which causes the module to apply the expected protection.

The record

CVE
CVE-2026-3526
Published
Mar 26, 2026
Updated
Mar 26, 2026
Vendor
Avatar Uploader Project
Product
File Access Fix
Classifications
CWE-863, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.0.0 <1.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Avatar Uploader Project · File Access Fixversion=0.0.0 <1.2.0

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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