CVE-2026-18352Network attack vectorHinoki check available

Unauthenticated file read via attachment identity mismatch

Published Aug 1, 2026 · Updated Aug 1, 2026

Path traversal in GM-Alex User Access Manager 2.3.15 and earlier allows remote attackers to read arbitrary server files via uamgetfile. When attachment_url_to_postid() returns 0 for a traversal path, file delivery authorizes the global post selected by attachment_id but streams the untrusted path. No authentication is required, but attachment_id must identify a legitimate public attachment for the mismatched access check to pass.

CVSS severity7.5
High
EPSS probability0.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Path traversal in GM-Alex User Access Manager 2.3.15 and earlier allows remote attackers to read arbitrary server files via uamgetfile. When attachment_url_to_postid() returns 0 for a traversal path, file delivery authorizes the global post selected by attachment_id but streams the untrusted path. No authentication is required, but attachment_id must identify a legitimate public attachment for the mismatched access check to pass.

The record

CVE
CVE-2026-18352
Published
Aug 1, 2026
Updated
Aug 1, 2026
Vendor
Alexander Schneider
Product
User Access Manager
Classifications
CWE-22, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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?

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  1. Affected versionversion=0 <=2.3.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Alexander Schneider · User Access Managerversion=0 <=2.3.15

Published CVSS scores

7.5WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

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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