How severe is CVE-2026-33329?

CVE-2026-33329 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2026-33329 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33329?

CVE-2026-33329 affects Filerise. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33329?

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-2026-33329 have an EU (EUVD) identifier?

Yes. CVE-2026-33329 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14992.

When was CVE-2026-33329 published?

CVE-2026-33329 was published on 2026-03-24 and last updated on 2026-06-17.

CVE-2026-33329

CVE-2026-33329 is a high-severity vulnerability in Filerise with a CVSS 3.x base score of 8.1. 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-22.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-14992
Weakness: CWE-22
Affected product: Filerise
Published: 2026-03-24
Last modified: 2026-06-17

Description

FileRise is a self-hosted web file manager / WebDAV server. From version 1.0.1 to before version 3.10.0, the resumableIdentifier parameter in the Resumable.js chunked upload handler (UploadModel::handleUpload()) is concatenated directly into filesystem paths without any sanitization. An authenticated user with upload permission can exploit this to write files to arbitrary directories on the server, delete arbitrary directories via the post-assembly cleanup, and probe file/directory existence. This issue has been patched in version 3.10.0.

Frequently asked questions

What is CVE-2026-33329?: FileRise is a self-hosted web file manager / WebDAV server. From version 1.0.1 to before version 3.10.0, the resumableIdentifier parameter in the Resumable.js chunked upload handler (UploadModel::handleUpload()) is concatenated directly into filesystem paths without any sanitization. An authenticated user with upload permission can exploit this to write files to arbitrary directories on the server, delete arbitrary directories via the post-assembly cleanup, and probe file/directory existence. This issue has been patched in version 3.10.0.
How severe is CVE-2026-33329?: CVE-2026-33329 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2026-33329 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33329?: CVE-2026-33329 affects Filerise. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33329?: 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-2026-33329 have an EU (EUVD) identifier?: Yes. CVE-2026-33329 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14992.
When was CVE-2026-33329 published?: CVE-2026-33329 was published on 2026-03-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:filerise:filerise:*:*:*:*:*:*:*:*

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