CVE-2026-93659
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- 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/M
- EPSS
- 0.26% probability · 18th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Source
- disclosure@vulncheck.com
EPSS 0.3% since 19 September 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.