How severe is CVE-2026-35604?

CVE-2026-35604 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-35604 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35604?

CVE-2026-35604 affects Filebrowser. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-35604?

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-2026-35604 have an EU (EUVD) identifier?

Yes. CVE-2026-35604 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19776.

When was CVE-2026-35604 published?

CVE-2026-35604 was published on 2026-04-07 and last updated on 2026-06-17.

CVE-2026-35604

CVE-2026-35604 is a high-severity vulnerability in Filebrowser with a CVSS 3.x base score of 8.1. 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 8.1)
CVSS v4: 8.2
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19776
Weakness: CWE-863
Affected product: Filebrowser
Published: 2026-04-07
Last modified: 2026-06-17

Description

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.1, when an admin revokes a user's Share and Download permissions, existing share links created by that user remain fully accessible to unauthenticated users. The public share download handler does not re-check the share owner's current permissions. This vulnerability is fixed in 2.63.1.

Frequently asked questions

What is CVE-2026-35604?: File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.1, when an admin revokes a user's Share and Download permissions, existing share links created by that user remain fully accessible to unauthenticated users. The public share download handler does not re-check the share owner's current permissions. This vulnerability is fixed in 2.63.1.
How severe is CVE-2026-35604?: CVE-2026-35604 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-35604 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35604?: CVE-2026-35604 affects Filebrowser. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-35604?: 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-2026-35604 have an EU (EUVD) identifier?: Yes. CVE-2026-35604 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19776.
When was CVE-2026-35604 published?: CVE-2026-35604 was published on 2026-04-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:*

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