CVE-2026-34586: CWE-863: Incorrect Authorization in mrmn2 PdfDing
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.
AI Analysis
Technical Summary
PdfDing, a self-hosted PDF manager, had an authorization flaw in versions before 1.7.1 where the access control function check_shared_access_allowed() failed to verify if a shared PDF was inactive due to expiration or view limits, or if it was deleted. The Serve and Download endpoints relied solely on this function, allowing continued access to shared PDFs beyond intended restrictions. This vulnerability is classified as CWE-863 (Incorrect Authorization) and has a CVSS 3.1 base score of 6.5, indicating a medium severity. The issue was patched in version 1.7.1.
Potential Impact
Unauthorized users who had prior access to shared PDFs could continue to access those documents after expiration, exceeding view limits, or after the PDFs were soft-deleted. This results in unauthorized disclosure of sensitive PDF content. There is no indication of impact on integrity or availability.
Mitigation Recommendations
Upgrade PdfDing to version 1.7.1 or later, where this authorization flaw has been fixed. No other mitigation is required as the vendor has provided an official fix.
CVE-2026-34586: CWE-863: Incorrect Authorization in mrmn2 PdfDing
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
PdfDing, a self-hosted PDF manager, had an authorization flaw in versions before 1.7.1 where the access control function check_shared_access_allowed() failed to verify if a shared PDF was inactive due to expiration or view limits, or if it was deleted. The Serve and Download endpoints relied solely on this function, allowing continued access to shared PDFs beyond intended restrictions. This vulnerability is classified as CWE-863 (Incorrect Authorization) and has a CVSS 3.1 base score of 6.5, indicating a medium severity. The issue was patched in version 1.7.1.
Potential Impact
Unauthorized users who had prior access to shared PDFs could continue to access those documents after expiration, exceeding view limits, or after the PDFs were soft-deleted. This results in unauthorized disclosure of sensitive PDF content. There is no indication of impact on integrity or availability.
Mitigation Recommendations
Upgrade PdfDing to version 1.7.1 or later, where this authorization flaw has been fixed. No other mitigation is required as the vendor has provided an official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-30T16:56:30.999Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69cc343ee6bfc5ba1d4033d8
Added to database: 3/31/2026, 8:53:18 PM
Last enriched: 4/7/2026, 11:19:22 PM
Last updated: 5/16/2026, 12:38:49 AM
Views: 49
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