CVE-2026-3649Network attack vector

Subscriber-level PDF metadata disclosure via unchecked AJAX handler

Published Apr 15, 2026 · Updated Apr 15, 2026

Missing authorization in Katalogportal PDF Sync 1.0.0 and earlier allows remote authenticated users to read private PDF metadata. The katalogportal_popup_shortcode() AJAX handler performs no capability or nonce check, then queries attachments with post_status set to any. Subscriber-level access therefore exposes synchronized attachment titles, actual filenames, and the katalogportal_userid value, including records linked to private or draft posts.

CVSS severity5.3
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Katalogportal PDF Sync 1.0.0 and earlier allows remote authenticated users to read private PDF metadata. The katalogportal_popup_shortcode() AJAX handler performs no capability or nonce check, then queries attachments with post_status set to any. Subscriber-level access therefore exposes synchronized attachment titles, actual filenames, and the katalogportal_userid value, including records linked to private or draft posts.

The record

CVE
CVE-2026-3649
Published
Apr 15, 2026
Updated
Apr 15, 2026
Vendor
Colbe Informatik GmbH
Product
Katalogportal PDF Sync
Classifications
CWE-862, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 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 <=1.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Colbe Informatik GmbH · Katalogportal PDF Syncversion=0 <=1.0.0

Published CVSS scores

5.3WordfenceCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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