CVE-2026-120205: Thelia Thelia

Thelia before 3.1.0 Stored XSS via Coupon Condition Customer Name

CVSS 7.4 HighEPSS 0.0026 · 18th percentile

Published by the CVE Program (CNA: VulnCheck) at 31 Oct 2026, 17:25 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Thelia	Thelia pkg:composer/thelia/thelia	affected before 3.1.0 semver Other versions: unaffected
Thelia	Thelia Core pkg:composer/thelia/core	affected before 3.1.0 semver Other versions: unaffected

Identifiers

CVE-2026-120205

CNA

VulnCheck

Weakness (CWE)

CWE-79

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.4	High	4.0	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N	CNA (VulnCheck)Used for this record
8.0	High	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0026, the 18th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 17:25 UTC Confirmed by the CVE List
31 Oct 2026, 17:36 UTC First seen by agentprime
31 Oct 2026, 18:17 UTC Confirmed by NVD

Sources

References from the CNA

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/ForSomeCustomers.php#L119 technical-description
www.vulncheck.com/advisories/thelia-before-3.1.0-stored-xss-via-coupon-condition-customer-name third-party-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.