CVE-2026-93659 Concrete CMS Community Store before 2.7.8 Stored XSS
Attackers can inject scripts into order fields to execute code in admin sessions, enabling account takeover and data theft.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-93659?
CVE-2026-93659 is a high-severity cross-site scripting vulnerability in concretecms-community-store community_store, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-93659?
How do I fix CVE-2026-93659?
No fix has been published for CVE-2026-93659 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-93659 being exploited?
There is no known exploitation of CVE-2026-93659 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-9rr2-pvrh-g3pm.