Vulnerability · Published Oct 31, 2026 · Assigned by VulnCheck
CVE-2026-120205Thelia before 3.1.0 Stored XSS via Coupon Condition Customer Name
High 8.0
In plain English
A high-severity cross-site scripting in Thelia from Thelia. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).
Severity (CVSS 3.1)8.0High
Exploit odds (30 days)0.3%top 81.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Thelia before 3.1.0 contains a stored cross-site scripting vulnerability in ForSomeCustomers::getSummary() that allows unauthenticated attackers to inject scripts via unescaped customer names. Attackers can register with a script payload as their name that executes when administrators view related coupons, stealing CSRF tokens to create administrator accounts.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Thelia | Thelia | 0 – before 3.1.0 |
| Thelia | Thelia Core | 0 – before 3.1.0 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
References
- GitHub Security Advisory (GHSA-r63g-6wfg-v5v9) vendor-advisory
- https://github.com/thelia/thelia/commit/c90d59375089a0833a56703c6f9f9ddea17bddc9 patch
- Thelia 3.1.0 Release Notes release-notes
- https://github.com/thelia/thelia/blob/3.0.0/core/lib/Thelia/Condition/Implementation/ForSomeCustomers.php#L119 technical-description
- VulnCheck Advisory: Thelia before 3.1.0 Stored XSS via Coupon Condition Customer Name third-party-advisory