Read the docs
TI-2021-08438 Aliases CVE-2021-26799GHSA-p9cm-p38f-27vm

Cross Site Scripting (XSS) vulnerability in admin/files/edit in Omeka Classic <=2.7…

Priority LOW 29CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

Cross Site Scripting (XSS) vulnerability in admin/files/edit in Omeka Classic <=2.7 allows remote attackers to inject arbitrary web script or HTML.

Why it matters now

EPSS 0.01042 64th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:omeka:omeka:*:*:*:*:*:*:*:*up to 2.7Vulnerableomeka
  • cpe:2.3:a:omeka:omeka:*:*:*:*:*:*:*:* Versions up to 2.7 Vulnerable ·omeka

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-26799
  2. 2026-10-03 Alias added: GHSA-p9cm-p38f-27vm

References

Exploit 2

  • TI-2023-03696 Server-Side Request Forgery (SSRF) in omeka/omeka-s CVSS 3.1MEDIUM 4.9
  • TI-2023-03697 Cross-site Scripting (XSS) - Stored in omeka/omeka-s CVSS 3.1MEDIUM 4.8
  • TI-2023-03695 Cross-site Scripting (XSS) - Stored in omeka/omeka-s CVSS 3.1MEDIUM 4.8
  • TI-2014-04171 Multiple cross-site request forgery (CSRF) vulnerabilities in Omeka before 2.2.1 allow… CVSS 2.0MEDIUM 6.8
  • TI-2018-09658 admin/themes/default/items/tag-form.php in Omeka before 2.6.1 allows XSS by adding or editing a tag. CVSS 3.0MEDIUM 6.1

Sources

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