How severe is CVE-2026-54097?

CVE-2026-54097 has a CVSS 4.0 base score of 7.2, rated high severity.

Is CVE-2026-54097 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-54097?

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-2026-54097 have an EU (EUVD) identifier?

Yes. CVE-2026-54097 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39505.

When was CVE-2026-54097 published?

CVE-2026-54097 was published on 2026-06-25 and last updated on 2026-06-26.

CVE-2026-54097

CVE-2026-54097 is a high-severity vulnerability with a CVSS 4.0 base score of 7.2. 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-639.

Key facts

Severity: High (CVSS 4.0 base score 7.2)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39505
Weakness: CWE-639
Published: 2026-06-25
Last modified: 2026-06-26

Description

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.6, a low-privileged authenticated user of filebrowser (with create + delete permissions in their own isolated scope) can silently destroy share-link records belonging to any other user — including the administrator — by performing a legitimate DELETE on a file in their own directory whose logical path happens to be a byte-prefix of another user's stored share.Link.Path. The file contents of the victim are not exposed, but the victim's share links are irrevocably wiped. This vulnerability is fixed in 2.63.6.

Frequently asked questions

What is CVE-2026-54097?: File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.6, a low-privileged authenticated user of filebrowser (with create + delete permissions in their own isolated scope) can silently destroy share-link records belonging to any other user — including the administrator — by performing a legitimate DELETE on a file in their own directory whose logical path happens to be a byte-prefix of another user's stored share.Link.Path. The file contents of the victim are not exposed, but the victim's share links are irrevocably wiped. This vulnerability is fixed in 2.63.6.
How severe is CVE-2026-54097?: CVE-2026-54097 has a CVSS 4.0 base score of 7.2, rated high severity.
Is CVE-2026-54097 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-54097?: 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-2026-54097 have an EU (EUVD) identifier?: Yes. CVE-2026-54097 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39505.
When was CVE-2026-54097 published?: CVE-2026-54097 was published on 2026-06-25 and last updated on 2026-06-26.

References

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