What is CVE-2018-13423?

CVE-2018-13423 is a medium-severity vulnerability in Omeka, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-07-07.

How severe is CVE-2018-13423?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Omeka

CVE-2018-13423

admin/themes/default/items/tag-form.php in Omeka before 2.6.1 allows XSS by adding or editing a tag.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-07-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (57.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Omeka

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/omeka/Omeka/commit/ba841892116544847d76d3838781c9708cb92221 (Patch, Third Party Advisory)
github.com/omeka/Omeka/releases/tag/v2.6.1 (Third Party Advisory)

Frequently asked questions

What is CVE-2018-13423?: CVE-2018-13423 is a medium-severity vulnerability in Omeka, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-07-07.
How severe is CVE-2018-13423?: Medium severity. CVSS v3 base score is 6.1 out of 10.