How severe is CVE-2023-4157?

CVE-2023-4157 has a CVSS 3.x base score of 5.2, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2023-4157 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4157?

CVE-2023-4157 affects Omeka Omeka S. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4157?

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

When was CVE-2023-4157 published?

CVE-2023-4157 was published on 2023-08-04 and last updated on 2026-06-17.

CVE-2023-4157

CVE-2023-4157 is a medium-severity vulnerability in Omeka Omeka S with a CVSS 3.x base score of 5.2. 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-74.

Key facts

Severity: Medium (CVSS 3.x base score 5.2)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Omeka Omeka S
Published: 2023-08-04
Last modified: 2026-06-17

Description

CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') in GitHub repository omeka/omeka-s prior to version 4.0.3.

Frequently asked questions

What is CVE-2023-4157?: CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') in GitHub repository omeka/omeka-s prior to version 4.0.3.
How severe is CVE-2023-4157?: CVE-2023-4157 has a CVSS 3.x base score of 5.2, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2023-4157 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4157?: CVE-2023-4157 affects Omeka Omeka S. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4157?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-4157 published?: CVE-2023-4157 was published on 2023-08-04 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-2023-4561 — Medium (CVSS 4.8): Cross-site Scripting (XSS) - Stored in GitHub repository omeka/omeka-s prior to 4.0.4.

All CVEs affecting Omeka Omeka S →

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