How severe is CVE-2023-4561?

CVE-2023-4561 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-4561 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4561?

CVE-2023-4561 affects Omeka Omeka S. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4561?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-4561 published?

CVE-2023-4561 was published on 2023-08-28 and last updated on 2026-06-17.

CVE-2023-4561

CVE-2023-4561 is a medium-severity vulnerability in Omeka Omeka S with a CVSS 3.x base score of 4.8. 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: Medium (CVSS 3.x base score 4.8)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Omeka Omeka S
Published: 2023-08-28
Last modified: 2026-06-17

Description

Cross-site Scripting (XSS) - Stored in GitHub repository omeka/omeka-s prior to 4.0.4.

Frequently asked questions

What is CVE-2023-4561?: Cross-site Scripting (XSS) - Stored in GitHub repository omeka/omeka-s prior to 4.0.4.
How severe is CVE-2023-4561?: CVE-2023-4561 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-4561 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4561?: CVE-2023-4561 affects Omeka Omeka S. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4561?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-4561 published?: CVE-2023-4561 was published on 2023-08-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:omeka:omeka_s:*:*:*:*:*:*:*:*

More vulnerabilities in Omeka Omeka S

CVE-2023-4159 — High (CVSS 8.8): Unrestricted Upload of File with Dangerous Type in GitHub repository omeka/omeka-s prior to 4.0.3.
CVE-2023-4560 — Medium (CVSS 6.5): Improper Authorization of Index Containing Sensitive Information in GitHub repository omeka/omeka-s prior to 4.0.4.
CVE-2023-4158 — Medium (CVSS 5.4): Cross-site Scripting (XSS) - Stored in GitHub repository omeka/omeka-s prior to 4.0.3.
CVE-2023-4157 — Medium (CVSS 5.2): CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') in GitHub…

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