CVE-2026-34376: PdfDing is a selfhosted PDF manager, viewer and editor offering a seamless user experience on multiple devices

Q: How do I fix CVE-2026-34376?

pdfding: upgrade to 1.7.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-34376 being exploited?

CVE-2026-34376 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-34376 affect?

CVE-2026-34376 affects pdfding. Severity is high (CVSS 7.5). 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

Q: How urgent is CVE-2026-34376?

Priority 39/100. High severity; Remotely exploitable, no login, no user action

Routine

HIGH 7.5REMOTEUPGRADE

CVE-2026-34376 is a high-severity flaw (CVSS 7.5) affecting pdfding. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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-lin

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-863
Published	2026-04-01
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: pdfding

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-01 18:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

pdfding pdfding UPGRADE

Affected: < 1.7.0

Fixed in: 1.7.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy pdfding || rpm -q pdfding || pdfding --version

2. UPGRADE to 1.7.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pdfding

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pdfding

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-34376?

pdfding: upgrade to 1.7.0. Exact commands for each OS are on this page.

Is CVE-2026-34376 being exploited?

CVE-2026-34376 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-34376 affect?

CVE-2026-34376 affects pdfding. Severity is high (CVSS 7.5). 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

How urgent is CVE-2026-34376?

Priority 39/100. High severity; Remotely exploitable, no login, no user action

References

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