How severe is CVE-2025-54796?

CVE-2025-54796 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-54796 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-54796?

CVE-2025-54796 affects 9001 Copyparty. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-54796?

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-2025-54796 have an EU (EUVD) identifier?

Yes. CVE-2025-54796 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23411.

When was CVE-2025-54796 published?

CVE-2025-54796 was published on 2025-08-02 and last updated on 2026-06-17.

CVE-2025-54796

CVE-2025-54796 is a high-severity vulnerability in 9001 Copyparty with a CVSS 3.x base score of 7.5. 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-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-23411
Weakness: CWE-400
Affected product: 9001 Copyparty
Published: 2025-08-02
Last modified: 2026-06-17

Description

Copyparty is a portable file server. Versions prior to 1.18.9, the filter parameter for the "Recent Uploads" page allows arbitrary RegExes. If this feature is enabled (which is the default), an attacker can craft a filter which deadlocks the server. This is fixed in version 1.18.9.

Frequently asked questions

What is CVE-2025-54796?: Copyparty is a portable file server. Versions prior to 1.18.9, the filter parameter for the "Recent Uploads" page allows arbitrary RegExes. If this feature is enabled (which is the default), an attacker can craft a filter which deadlocks the server. This is fixed in version 1.18.9.
How severe is CVE-2025-54796?: CVE-2025-54796 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-54796 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-54796?: CVE-2025-54796 affects 9001 Copyparty. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-54796?: 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-2025-54796 have an EU (EUVD) identifier?: Yes. CVE-2025-54796 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23411.
When was CVE-2025-54796 published?: CVE-2025-54796 was published on 2025-08-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:9001:copyparty:*:*:*:*:*:*:*:*

More vulnerabilities in 9001 Copyparty

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