How severe is CVE-2026-34530?

CVE-2026-34530 has a CVSS 3.x base score of 6.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2026-34530 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34530?

CVE-2026-34530 affects Filebrowser. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34530?

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

Does CVE-2026-34530 have an EU (EUVD) identifier?

Yes. CVE-2026-34530 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18055.

When was CVE-2026-34530 published?

CVE-2026-34530 was published on 2026-04-01 and last updated on 2026-06-17.

CVE-2026-34530

CVE-2026-34530 is a medium-severity vulnerability in Filebrowser with a CVSS 3.x base score of 6.9. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.9)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18055
Weakness: CWE-79
Affected product: Filebrowser
Published: 2026-04-01
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 version 2.62.2, the SPA index page in File Browser is vulnerable to Stored Cross-Site Scripting (XSS) via admin-controlled branding fields. An admin who sets branding.name to a malicious payload injects persistent JavaScript that executes for ALL visitors, including unauthenticated users. This issue has been patched in version 2.62.2.

Frequently asked questions

What is CVE-2026-34530?: File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to version 2.62.2, the SPA index page in File Browser is vulnerable to Stored Cross-Site Scripting (XSS) via admin-controlled branding fields. An admin who sets branding.name to a malicious payload injects persistent JavaScript that executes for ALL visitors, including unauthenticated users. This issue has been patched in version 2.62.2.
How severe is CVE-2026-34530?: CVE-2026-34530 has a CVSS 3.x base score of 6.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2026-34530 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34530?: CVE-2026-34530 affects Filebrowser. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34530?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-34530 have an EU (EUVD) identifier?: Yes. CVE-2026-34530 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18055.
When was CVE-2026-34530 published?: CVE-2026-34530 was published on 2026-04-01 and last updated on 2026-06-17.

References

Affected products (1)

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

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