How severe is CVE-2026-34586?

CVE-2026-34586 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-34586 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34586?

CVE-2026-34586 affects Pdfding. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34586?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-34586 have an EU (EUVD) identifier?

Yes. CVE-2026-34586 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17636.

When was CVE-2026-34586 published?

CVE-2026-34586 was published on 2026-03-31 and last updated on 2026-06-17.

CVE-2026-34586

CVE-2026-34586 is a medium-severity vulnerability in Pdfding with a CVSS 3.x base score of 6.5. 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: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17636
Weakness: CWE-863
Affected product: Pdfding
Published: 2026-03-31
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 1.7.1, check_shared_access_allowed() validates only session existence — it does not check SharedPdf.inactive (expiration / max views) or SharedPdf.deleted. The Serve and Download endpoints rely solely on this function, allowing previously-authorized users to access shared PDF content after expiration, view limit, or soft-deletion. This issue has been patched in version 1.7.1.

Frequently asked questions

What is CVE-2026-34586?: PdfDing is a selfhosted PDF manager, viewer and editor offering a seamless user experience on multiple devices. Prior to version 1.7.1, check_shared_access_allowed() validates only session existence — it does not check SharedPdf.inactive (expiration / max views) or SharedPdf.deleted. The Serve and Download endpoints rely solely on this function, allowing previously-authorized users to access shared PDF content after expiration, view limit, or soft-deletion. This issue has been patched in version 1.7.1.
How severe is CVE-2026-34586?: CVE-2026-34586 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-34586 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34586?: CVE-2026-34586 affects Pdfding. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34586?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-34586 have an EU (EUVD) identifier?: Yes. CVE-2026-34586 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17636.
When was CVE-2026-34586 published?: CVE-2026-34586 was published on 2026-03-31 and last updated on 2026-06-17.

References

Affected products (1)

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

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