How severe is CVE-2026-33330?

CVE-2026-33330 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.

Is CVE-2026-33330 being actively exploited?

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

What products are affected by CVE-2026-33330?

CVE-2026-33330 affects Filerise. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33330?

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-2026-33330 have an EU (EUVD) identifier?

Yes. CVE-2026-33330 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14994.

When was CVE-2026-33330 published?

CVE-2026-33330 was published on 2026-03-24 and last updated on 2026-06-17.

CVE-2026-33330

CVE-2026-33330 is a high-severity vulnerability in Filerise with a CVSS 3.x base score of 7.1. 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-863.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-14994
Weakness: CWE-863
Affected product: Filerise
Published: 2026-03-24
Last modified: 2026-06-17

Description

FileRise is a self-hosted web file manager / WebDAV server. Prior to version 3.10.0, a broken access control issue in FileRise's ONLYOFFICE integration allows an authenticated user with read-only access to obtain a signed save callbackUrl for a file and then directly forge the ONLYOFFICE save callback to overwrite that file with attacker-controlled content. This issue has been patched in version 3.10.0.

Frequently asked questions

What is CVE-2026-33330?: FileRise is a self-hosted web file manager / WebDAV server. Prior to version 3.10.0, a broken access control issue in FileRise's ONLYOFFICE integration allows an authenticated user with read-only access to obtain a signed save callbackUrl for a file and then directly forge the ONLYOFFICE save callback to overwrite that file with attacker-controlled content. This issue has been patched in version 3.10.0.
How severe is CVE-2026-33330?: CVE-2026-33330 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.
Is CVE-2026-33330 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33330?: CVE-2026-33330 affects Filerise. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33330?: 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-2026-33330 have an EU (EUVD) identifier?: Yes. CVE-2026-33330 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14994.
When was CVE-2026-33330 published?: CVE-2026-33330 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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