CVE-2026-34376
PdfDing: Password-protected share bypass via direct serve endpoint
Description
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 by directly calling the file-serving endpoint without completing the password verification flow. This results in unauthorized access to confidential documents that users expected to be protected by a shared-link password. This issue has been patched in version 1.7.0.
INFO
Published Date :
April 1, 2026, 6:16 p.m.
Last Modified :
April 7, 2026, 8:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
- Update PdfDing to version 1.7.0 or later.
- Verify access controls for shared documents.
Public PoC/Exploit Available at Github
CVE-2026-34376 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-34376.
| URL | Resource |
|---|---|
| https://github.com/mrmn2/PdfDing/commit/ae579ea98c5603d1435e0d90e81d72151564088a | Patch |
| https://github.com/mrmn2/PdfDing/pull/294 | Issue Tracking Patch |
| https://github.com/mrmn2/PdfDing/releases/tag/v1.7.0 | Product Release Notes |
| https://github.com/mrmn2/PdfDing/security/advisories/GHSA-42x7-vvj4-4cj3 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-34376 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-34376
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-34376 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-34376 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 07, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:pdfding:pdfding:*:*:*:*:*:*:*:* versions up to (excluding) 1.7.0 Added Reference Type GitHub, Inc.: https://github.com/mrmn2/PdfDing/commit/ae579ea98c5603d1435e0d90e81d72151564088a Types: Patch Added Reference Type GitHub, Inc.: https://github.com/mrmn2/PdfDing/pull/294 Types: Issue Tracking, Patch Added Reference Type GitHub, Inc.: https://github.com/mrmn2/PdfDing/releases/tag/v1.7.0 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/mrmn2/PdfDing/security/advisories/GHSA-42x7-vvj4-4cj3 Types: Vendor Advisory -
New CVE Received by [email protected]
Apr. 01, 2026
Action Type Old Value New Value Added Description 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 by directly calling the file-serving endpoint without completing the password verification flow. This results in unauthorized access to confidential documents that users expected to be protected by a shared-link password. This issue has been patched in version 1.7.0. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-863 Added Reference https://github.com/mrmn2/PdfDing/commit/ae579ea98c5603d1435e0d90e81d72151564088a Added Reference https://github.com/mrmn2/PdfDing/pull/294 Added Reference https://github.com/mrmn2/PdfDing/releases/tag/v1.7.0 Added Reference https://github.com/mrmn2/PdfDing/security/advisories/GHSA-42x7-vvj4-4cj3