CVE-2026-34586

MEDIUM

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

Title source: cna

Description

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.

References (3)

Core 3

Core References

X_Refsource_Confirm x_refsource_confirm

https://github.com/mrmn2/PdfDing/security/advisories/GHSA-vfqx-2464-38wf

X_Refsource_Misc x_refsource_misc

https://github.com/mrmn2/PdfDing/commit/a6783b259b25c839c52c6f2380333827a52e89eb

View Writeup ZIP pw:eip

X_Refsource_Misc x_refsource_misc

https://github.com/mrmn2/PdfDing/releases/tag/v1.7.1

Scores

CVSS v3 6.5

EPSS 0.0029

EPSS Percentile 20.9%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-863

Status published

Products (2)

mrmn2/PdfDing < 1.7.1

pdfding/pdfding < 1.7.1

Published Mar 31, 2026

Tracked Since Apr 01, 2026