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Vulnerability record · CVE-2026-93659 · published 18 September 2026

CVE-2026-93659: Cross-site scripting vulnerability

Concrete CMS Community Store before 2.7.8 renders customer-supplied order fields without HTML escaping in checkout and admin views. Unauthenticated attackers can store script payloads in billing name, email, or phone fields that execute in authenticated manager sessions to create rogue accounts or exfiltrate data.

9.3 CVSS 4.0 Critical EPSS 0.47% · top 61.9% CWE-79 · Cross-site scripting Awaiting Analysis
9.3CVSS 4.0 base score
0.47%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
22 Sep 2026Last modified by NVD

Description

Concrete CMS Community Store before 2.7.8 renders customer-supplied order fields without HTML escaping in checkout and admin views. Unauthenticated attackers can store script payloads in billing name, email, or phone fields that execute in authenticated manager sessions to create rogue accounts or exfiltrate data.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/concretecms-community-store/community_store
https://github.com/concretecms-community-store/community_store/blob/v2.7.7/elements/order_slip.php
https://github.com/concretecms-community-store/community_store/commit/2a802d6a5717f4e351ef21fdf8bdaf8061c40109
https://github.com/concretecms-community-store/community_store/releases/tag/v2.7.8
https://www.vulncheck.com/advisories/concrete-cms-community-store-before-2.7.8-stored-xss

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Source: NIST National Vulnerability Database (record CVE-2026-93659), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.