CVE-2026-120248: Thelia · Cross-site Scripting
Affects TheliaSource CVE Database V5
Not known to be exploited · CVSS 4.6 Medium : upgrade to 3.1.1 when convenient.
Data as of 1 Nov 2026, 01:21 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 4.6 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 4.8 |
- Patch
- Available – fixed in 3.1.1, 1.1.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 1 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 31 Oct 2026.
What to do
Upgrade Thelia and Thelia Core to 3.1.1; Thelia Back-office Default Twig Template to 1.1.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| TheliaThelia | Affected
| Fixed in
|
| TheliaThelia Core | Affected
| Fixed in
|
| TheliaThelia Back-office Default Twig Template | Affected
| Fixed in
|
PackagistTheliapkg:composer/TheliaOther threats | Affected
| Fixed in
|
PackagistThelia Corepkg:composer/Thelia CoreOther threats | Affected
| Fixed in
|
PackagistThelia Back-office Default Twig Templatepkg:composer/Thelia Back-office Default Twig TemplateOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade Thelia to version 3.1.1 or later, or 1.1.1 or later, where this vulnerability is fixed. No other mitigations are specified or required once patched.
Description
Thelia versions prior to 3.1.1 contain a stored cross-site scripting (XSS) vulnerability. Authenticated back-office administrators with store update permissions can exploit this by uploading unsanitized SVG images as logo or banner files. These SVG files can include malicious scripts that execute when accessed via the admin or public cache directories, potentially affecting visitors and higher-privileged administrators.
References
- github.com/thelia/thelia/security/advisories/GHSA-gvcv-hvpp-89gx (opens in a new tab)
- github.com/thelia-templates/default-twig/commit/d79780eafc5b17ac75554c836a1853610d89a090 (opens in a new tab)
- github.com/thelia-templates/default-twig/commit/f690a649cbbcee9543647cb7ed5018df68f66658 (opens in a new tab)
- github.com/thelia/thelia/commit/2c691e5c3bb8536ca901fcf7d2780301bd111ba9 (opens in a new tab)
- github.com/thelia/thelia/releases/tag/3.1.1 (opens in a new tab)
- github.com/thelia-templates/default-twig/blob/6473c164bd86348f4c7d0ef6f194f1ff3d267902/src/Controller/Configuration/ConfigStoreController.php (opens in a new tab)
- vulncheck.com/advisories/thelia-before-3.1.1-stored-xss-via-svg-store-logo-and-banner-uploads (opens in a new tab)