CVE-2026-34586 MEDIUM

CVE-2026-34586: PdfDing: Shared PDF Expiration, Max Views, and Deletion Bypass via Serve/Download Endpoints

Vendor Mrmn2
Product PdfDing
Weakness CWE-863 · Incorrect authorization
Published March 31, 2026
Last update April 3, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

PdfDing is a selfhosted PDF manager, viewer and editor offering a seamless user experience on multiple devices. Prior to version 1.7.1, check_shared_access_allowed() validates only session existence — it does not check SharedPdf.inactive (expiration / max views) or SharedPdf.deleted. The Serve and Download endpoints rely solely on this function, allowing previously-authorized users to access shared PDF content after expiration, view limit, or soft-deletion. This issue has been patched in version 1.7.1.

Key dates

02Disclosure timeline

March 31, 2026 CVE published
April 3, 2026 Record updated