How severe is CVE-2023-41471?

CVE-2023-41471 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-41471 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-41471?

CVE-2023-41471 affects 9001 Copyparty. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-41471?

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-2023-41471 have an EU (EUVD) identifier?

Yes. CVE-2023-41471 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-45971.

When was CVE-2023-41471 published?

CVE-2023-41471 was published on 2025-08-29 and last updated on 2026-06-17.

CVE-2023-41471

CVE-2023-41471 is a high-severity vulnerability in 9001 Copyparty with a CVSS 3.x base score of 7.8. 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-79.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-45971
Weakness: CWE-79
Affected product: 9001 Copyparty
Published: 2025-08-29
Last modified: 2026-06-17

Description

Cross Site Scripting vulnerability in copyparty before 1.9.2 allows a local attacker to execute arbitrary code via a crafted payload to the WEEKEND-PLANS function. NOTE: this is disputed because WEEKEND-PLANS is accessible only to actors who already have write access to the server, and they can more simply upload HTML files containing JavaScript.

Frequently asked questions

What is CVE-2023-41471?: Cross Site Scripting vulnerability in copyparty before 1.9.2 allows a local attacker to execute arbitrary code via a crafted payload to the WEEKEND-PLANS function. NOTE: this is disputed because WEEKEND-PLANS is accessible only to actors who already have write access to the server, and they can more simply upload HTML files containing JavaScript.
How severe is CVE-2023-41471?: CVE-2023-41471 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-41471 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-41471?: CVE-2023-41471 affects 9001 Copyparty. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-41471?: 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-2023-41471 have an EU (EUVD) identifier?: Yes. CVE-2023-41471 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-45971.
When was CVE-2023-41471 published?: CVE-2023-41471 was published on 2025-08-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:9001:copyparty:1.9.1:*:*:*:*:*:*:*

More vulnerabilities in 9001 Copyparty

CVE-2025-58753 — High (CVSS 7.5): Copyparty is a portable file server. In versions prior to 1.19.8, there was a missing permission-check in the shares…
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CVE-2023-37474 — High (CVSS 7.5): Copyparty is a portable file server. Versions prior to 1.8.2 are subject to a path traversal vulnerability detected in…
CVE-2026-32108 — Medium (CVSS 6.5): Copyparty is a portable file server. Prior to 1.20.12, there was a missing permission-check in the shares feature (the…
CVE-2025-54589 — Medium (CVSS 6.3): Copyparty is a portable file server. In versions 1.18.6 and below, when accessing the recent uploads page at `/?ru`,…
CVE-2023-38501 — Medium (CVSS 6.3): copyparty is file server software. Prior to version 1.8.7, the application contains a reflected cross-site scripting…

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