CVE-2026-72835
mediumpriority · track · 0EPSS 0.005 · 43 %ileEUEPSS · scored 2026-10-27
filebrowser versions before v2.63.21 fail to canonicalize paths before evaluating access rules, allowing authenticated users to bypass administrator-defined deny rules using case-variant or backslash-separated paths. Attackers can request files with alternate path representations that match no rule but resolve to the same filesystem object, gaining unauthorized access to denied files within their scope.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.9–7.6
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (1)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (6)
External citations — patches, advisories, analysis.
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-fgm5-pw99-w2p7cnnvd
- https://www.vulncheck.com/advisories/filebrowser-before-access-rule-bypass-via-path-canonicalizationcnnvd
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-fgm5-pw99-w2p7enisa_euvd
- https://www.vulncheck.com/advisories/filebrowser-before-access-rule-bypass-via-path-canonicalizationenisa_euvd
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-fgm5-pw99-w2p7nvd
- https://www.vulncheck.com/advisories/filebrowser-before-access-rule-bypass-via-path-canonicalizationnvd
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