How severe is CVE-2023-6723?

CVE-2023-6723 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-6723 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-6723?

CVE-2023-6723 affects Europeana Repox. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-6723?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-6723 published?

CVE-2023-6723 was published on 2023-12-13 and last updated on 2026-06-17.

CVE-2023-6723

CVE-2023-6723 is a critical-severity vulnerability in Europeana Repox with a CVSS 3.x base score of 10.0. 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Europeana Repox
Published: 2023-12-13
Last modified: 2026-06-17

Description

An unrestricted file upload vulnerability has been identified in Repbox, which allows an attacker to upload malicious files via the transforamationfileupload function, due to the lack of proper file type validation controls, resulting in a full system compromise.

Frequently asked questions

What is CVE-2023-6723?: An unrestricted file upload vulnerability has been identified in Repbox, which allows an attacker to upload malicious files via the transforamationfileupload function, due to the lack of proper file type validation controls, resulting in a full system compromise.
How severe is CVE-2023-6723?: CVE-2023-6723 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-6723 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-6723?: CVE-2023-6723 affects Europeana Repox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-6723?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-6723 published?: CVE-2023-6723 was published on 2023-12-13 and last updated on 2026-06-17.

References

https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-repox

Affected products (1)

cpe:2.3:a:europeana:repox:2.3.7:*:*:*:*:*:*:*

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CVE-2023-6722 — High (CVSS 7.5): A path traversal vulnerability has been detected in Repox, which allows an attacker to read arbitrary files on the…
CVE-2023-6719 — Medium (CVSS 6.3): An XSS vulnerability has been detected in Repox, which allows an attacker to compromise interactions between a user and…
CVE-2023-6720 — Medium (CVSS 5.5): An XSS vulnerability stored in Repox has been identified, which allows a local attacker to store a specially crafted…

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