XSS in Thelia
CVE-2026-120205
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/thelia/thelia/security/advisories/GHSA-r63g-6wfg-v5v9 (vendor-advisory)
- github.com/thelia/thelia/commit/c90d59375089a0833a56703c6f9f9ddea17bddc9 (patch)
- github.com/thelia/thelia/releases/tag/3.1.0 (release-notes)
- github.com/thelia/thelia/blob/3.0.0/core/lib/Thelia/Condition/Implementation/Fo… (technical-description)
- www.vulncheck.com/advisories/thelia-before-3.1.0-stored-xss-via-coupon-conditio… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-120205?
- CVE-2026-120205 is a high-severity vulnerability in Thelia, classified under Cross-site Scripting. CVSS score: 8.0/10. Published 2026-10-31.
- How severe is CVE-2026-120205?
- High severity. CVSS v3 base score is 8.0 out of 10.