How severe is CVE-2026-34376?

CVE-2026-34376 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-34376 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34376?

CVE-2026-34376 affects Pdfding. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34376?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-34376 have an EU (EUVD) identifier?

Yes. CVE-2026-34376 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17981.

When was CVE-2026-34376 published?

CVE-2026-34376 was published on 2026-04-01 and last updated on 2026-06-17.

CVE-2026-34376

CVE-2026-34376 is a high-severity vulnerability in Pdfding with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17981
Weakness: CWE-863
Affected product: Pdfding
Published: 2026-04-01
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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 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.
How severe is CVE-2026-34376?: CVE-2026-34376 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-34376 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34376?: CVE-2026-34376 affects Pdfding. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34376?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-34376 have an EU (EUVD) identifier?: Yes. CVE-2026-34376 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17981.
When was CVE-2026-34376 published?: CVE-2026-34376 was published on 2026-04-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pdfding:pdfding:*:*:*:*:*:*:*:*

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