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TI-2023-03846 Aliases CVE-2023-4157GHSA-fxc5-pr68-2px3

Improper Neutralization of Special Elements in Output Used by a Downstream Component in omeka/omeka-s

Priority MEDIUM 57CWE-74Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00514 44th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed omeka/omeka-s (omeka): 4.0.3omeka/omeka-s (Packagist): 4.0.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
omekaomeka/omeka-sbefore 4.0.34.0.3Patch availableCNA
—omeka/omeka-s (Packagist)before 4.0.34.0.3Patch availableGHSA-fxc5-pr68-2px3
  • omeka/omeka-s Vendoromeka Affected before 4.0.3 Fixed in 4.0.3 Patch available CNA
  • omeka/omeka-s (Packagist) Vendor— Affected before 4.0.3 Fixed in 4.0.3 Patch available GHSA-fxc5-pr68-2px3

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:omeka:omeka_s:*:*:*:*:*:*:*:*before 4.0.3Vulnerableomeka
  • cpe:2.3:a:omeka:omeka_s:*:*:*:*:*:*:*:* Versions before 4.0.3 Vulnerable ·omeka

Remediation

  • Fix · CNA omeka/omeka-s (omeka) Fixed in 4.0.3
  • Fix · GHSA-fxc5-pr68-2px3 omeka/omeka-s (Packagist) Fixed in 4.0.3 Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    omeka/omeka-s 4.0.3

    3 records Highest priority Priority HIGH 1 HIGH, 2 MEDIUM

    Other records, highest priority first

    • TI-2023-03848 Unrestricted Upload of File with Dangerous Type in omeka/omeka-sPriority HIGH 73
    • TI-2023-03847 Cross-site Scripting (XSS) - Stored in omeka/omeka-sPriority MEDIUM 58
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-4157
  2. 2026-10-03 Alias added: GHSA-fxc5-pr68-2px3

References

Exploit 1

Patch 1

Advisory 1

Other 1

  • TI-2023-03848 Unrestricted Upload of File with Dangerous Type in omeka/omeka-s CVSS 3.1HIGH 8.8
  • TI-2023-04206 Improper Authorization of Index Containing Sensitive Information in omeka/omeka-s CVSS 3.1MEDIUM 6.5
  • TI-2023-03847 Cross-site Scripting (XSS) - Stored in omeka/omeka-s CVSS 3.1MEDIUM 5.4
  • TI-2023-04207 Cross-site Scripting (XSS) - Stored in omeka/omeka-s CVSS 3.1MEDIUM 4.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences