How severe is CVE-2026-35606?

CVE-2026-35606 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-2026-35606 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35606?

CVE-2026-35606 affects Filebrowser. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-35606?

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-2026-35606 have an EU (EUVD) identifier?

Yes. CVE-2026-35606 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19780.

When was CVE-2026-35606 published?

CVE-2026-35606 was published on 2026-04-07 and last updated on 2026-06-17.

CVE-2026-35606

CVE-2026-35606 is a high-severity vulnerability in Filebrowser 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-862.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 5.3
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19780
Weakness: CWE-862
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, the resourceGetHandler in http/resource.go returns full text file content without checking the Perm.Download permission flag. All three other content-serving endpoints (/api/raw, /api/preview, /api/subtitle) correctly verify this permission before serving content. A user with download: false can read any text file within their scope through two bypass paths. This vulnerability is fixed in 2.63.1.

Frequently asked questions

What is CVE-2026-35606?: File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.1, the resourceGetHandler in http/resource.go returns full text file content without checking the Perm.Download permission flag. All three other content-serving endpoints (/api/raw, /api/preview, /api/subtitle) correctly verify this permission before serving content. A user with download: false can read any text file within their scope through two bypass paths. This vulnerability is fixed in 2.63.1.
How severe is CVE-2026-35606?: CVE-2026-35606 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-2026-35606 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35606?: CVE-2026-35606 affects Filebrowser. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-35606?: 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-2026-35606 have an EU (EUVD) identifier?: Yes. CVE-2026-35606 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19780.
When was CVE-2026-35606 published?: CVE-2026-35606 was published on 2026-04-07 and last updated on 2026-06-17.

References

https://github.com/filebrowser/filebrowser/security/advisories/GHSA-67cg-cpj7-qgc9

Affected products (1)

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

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