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Low 3.1Published Apr 21, 2026

CVE-2026-27937October: Reflected XSS via DataTable Form Widget

Updated under an hour ago ()

Does this affect you?

It affects octobercms october. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

October is a Content Management System (CMS) and web platform. Prior to 3.7.16 and 4.1.16, a reflected Cross-Site Scripting (XSS) vulnerability was identified in the backend DataTable widget where a query parameter was rendered without proper output escaping. This vulnerability is fixed in 3.7.16 and 4.1.16.

CVSS
3.1 LOW (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
Weakness (CWE)
CWE-79
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
GitHub_M
NVD analysis
Deferred
Record last updated
Apr 21, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
octobercms october
octobercms:october (from the name)
from 4.0.0, < 4.1.16; before 3.7.16
CNA record

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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