Vulnerability · Published Apr 1, 2026 · Assigned by GitHub_M

CVE-2026-34376PdfDing: Password-protected share bypass via direct serve endpoint

High 7.5

In plain English

A high-severity incorrect authorization in PdfDing from mrmn2. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.4%top 67.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
mrmn2	PdfDing	< 1.7.0

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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