CVE-2026-120205: XSS (CVSS 8)

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.

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CVSS v3.1 Score

8.0

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

References

Other References

https://github.com/thelia/thelia/blob/3.0.0/core/lib/Thelia/Condition/Implementation/ForSomeCustomers.php#L119 https://github.com/thelia/thelia/commit/c90d59375089a0833a56703c6f9f9ddea17bddc9 https://github.com/thelia/thelia/releases/tag/3.1.0 https://github.com/thelia/thelia/security/advisories/GHSA-r63g-6wfg-v5v9 https://www.vulncheck.com/advisories/thelia-before-3.1.0-stored-xss-via-coupon-condition-customer-name

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 8.0 (HIGH).

How severe is CVE-2026-120205? +

CVE-2026-120205 has a CVSS v3.1 score of 8.0 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2026-120205? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-120205