What is CVE-2026-34586?

CVE-2026-34586 is a medium-severity vulnerability in Mrmn2 Pdfding, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-03-31.

How severe is CVE-2026-34586?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Mrmn2 Pdfding

CVE-2026-34586

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 (…

Vulnerability class: Broken Access Control

EPSS: 0.000 (11.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Mrmn2 Pdfding — versions < 1.7.1

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

https://github.com/mrmn2/PdfDing/security/advisories/GHSA-vfqx-2464-38wf (x_refsource_CONFIRM)
https://github.com/mrmn2/PdfDing/commit/a6783b259b25c839c52c6f2380333827a52e89eb (x_refsource_MISC)
https://github.com/mrmn2/PdfDing/releases/tag/v1.7.1 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-34586?: CVE-2026-34586 is a medium-severity vulnerability in Mrmn2 Pdfding, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-03-31.
How severe is CVE-2026-34586?: Medium severity. CVSS v3 base score is 6.5 out of 10.