What is CVE-2026-34376?

CVE-2026-34376 is a high-severity vulnerability in Mrmn2 Pdfding, classified under Incorrect Authorization. CVSS score: 7.5/10. Published 2026-04-01.

How severe is CVE-2026-34376?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Mrmn2 Pdfding

CVE-2026-34376

PdfDing is a selfhosted PDF manager, viewer and editor offering a seamless user experience on multiple devices. Prior to version 1.7.0, an access-control vulnerability allows unauthenticated users to retrieve password-protected shared PDFs…

Vulnerability class: Broken Access Control

EPSS: 0.000 (6.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Mrmn2 Pdfding — versions < 1.7.0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

https://github.com/mrmn2/PdfDing/security/advisories/GHSA-42x7-vvj4-4cj3 (x_refsource_CONFIRM)
https://github.com/mrmn2/PdfDing/pull/294 (x_refsource_MISC)
https://github.com/mrmn2/PdfDing/commit/ae579ea98c5603d1435e0d90e81d72151564088a (x_refsource_MISC)
https://github.com/mrmn2/PdfDing/releases/tag/v1.7.0 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-34376?: CVE-2026-34376 is a high-severity vulnerability in Mrmn2 Pdfding, classified under Incorrect Authorization. CVSS score: 7.5/10. Published 2026-04-01.
How severe is CVE-2026-34376?: High severity. CVSS v3 base score is 7.5 out of 10.