PdfDing: Password-protected share bypass via direct serve endpoint
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-863.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| mrmn2 | PdfDing | before 1.7.0 | 1.7.0 | Patch available | CNA |
- PdfDing Vendormrmn2 Affected before 1.7.0 Fixed in 1.7.0 Patch available CNA
Remediation
- Fix · CNA PdfDing (mrmn2) Fixed in 1.7.0
Timeline
- 2026-10-02 Threatist record created from CVE-2026-34376
References
More Pdfding vulnerabilities
- TI-2026-26833 PdfDing: Shared PDF Expiration, Max Views, and Deletion Bypass via Serve/Download Endpoints CVSS 3.1MEDIUM 6.5
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences