How severe is CVE-2026-34529?

CVE-2026-34529 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2026-34529 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34529?

CVE-2026-34529 affects Filebrowser. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34529?

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-2026-34529 have an EU (EUVD) identifier?

Yes. CVE-2026-34529 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18052.

When was CVE-2026-34529 published?

CVE-2026-34529 was published on 2026-04-01 and last updated on 2026-06-17.

CVE-2026-34529

CVE-2026-34529 is a high-severity vulnerability in Filebrowser with a CVSS 3.x base score of 7.6. 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: High (CVSS 3.x base score 7.6)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18052
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 EPUB preview function in File Browser is vulnerable to Stored Cross-Site Scripting (XSS). JavaScript embedded in a crafted EPUB file executes in the victim's browser when they preview the file. This issue has been patched in version 2.62.2.

Frequently asked questions

What is CVE-2026-34529?: 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 EPUB preview function in File Browser is vulnerable to Stored Cross-Site Scripting (XSS). JavaScript embedded in a crafted EPUB file executes in the victim's browser when they preview the file. This issue has been patched in version 2.62.2.
How severe is CVE-2026-34529?: CVE-2026-34529 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2026-34529 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34529?: CVE-2026-34529 affects Filebrowser. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34529?: 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-2026-34529 have an EU (EUVD) identifier?: Yes. CVE-2026-34529 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18052.
When was CVE-2026-34529 published?: CVE-2026-34529 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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