PT-2026-29354 · Pdfding · Pdfding

Axel-Corsiez · Published 2026-03-31 · Updated 2026-04-01 · CVE-2026-34586

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions PdfDing versions prior to 1.7.1

Description PdfDing is a selfhosted PDF manager, viewer and editor. Prior to version 1.7.1, the check shared access allowed() function only validates session existence and does not check if a shared PDF is inactive (expired or has reached its maximum view count) or deleted. The Serve and Download API endpoints, ''/serve'' and ''/download'', rely on this function, allowing previously-authorized users to access shared PDF content after it has expired, reached its view limit, or been soft-deleted.

Recommendations Update to version 1.7.1 or later.

Exploit

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

CVE-2026-34586

GHSA-VFQX-2464-38WF

Affected Products

Pdfding

References · 7

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34586.json · Exploit
• https://github.com/mrmn2/PdfDing/commit/a6783b259b25c839c52c6f2380333827a52e89eb · Patch
• https://github.com/mrmn2/PdfDing/security/advisories/GHSA-vfqx-2464-38wf · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-34586 · Security Note
• https://osv.dev/vulnerability/CVE-2026-34586 · Vendor Advisory
• https://github.com/mrmn2/PdfDing/releases/tag/v1.7.1 · Note
• https://twitter.com/CVEnew/status/2039372133982179482 · Twitter Post