CVE-2026-93659

Concrete CMS Community Store before 2.7.8 Stored XSS

8.6 HighPublic exploit

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Passive

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: None

Exploit likelihood

0.37%Up 0.1 points since Sep 19, 2026

What each source reports

CVE List Score used 8.6

Concrete CMS Community Store before 2.7.8 Stored XSS

Record: CVE-2026-93659
CVSS 4.0: 8.6 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2026-82941 8.6

Record: EUVD-2026-82941
CVSS 4.0: 8.6 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-9rr2-pvrh-g3pm 9.3

Concrete CMS Community Store before 2.7.8 renders customer-supplied order fields without HTML...

Record: GHSA-9rr2-pvrh-g3pm
CVSS 4.0: 9.3 CriticalCVSS: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:X/V:X/RE:X/U:X
CVSS 3.1: 8.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness: CWE-79
Updated: 2026-11-02

NVD 8.6

Record: CVE-2026-93659
CVSS 4.0: 8.6 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/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:X/V:X/RE:X/U:X
CVSS 3.1: 8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSV 8.6

Concrete CMS Community Store before 2.7.8 Stored XSS

Record: CVE-2026-93659
CVSS 4.0: 8.6 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Weakness: CWE-79
Updated: 2026-11-02

Affected products

concretecms-community-store community store

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
PoC in GitHub	prince325/CVE-2026-93659-writeup	2026-09-19

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-93659 is a high vulnerability (CVSS 8.6) in Concretecms-community-store Community Store, published September 18, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.37%, the 31st percentile. No source names a fixed version.