# CVE-2026-103537: Thelia absolute path traversal in Smarty template handling

Source: https://junglewise.ai/threats/cve-2026-103537-thelia-2-6-1-contains-an-absolute-path-traversal-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-12. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-103537 · Severity: medium · CVSS 5.4 · Published 2026-10-12

Thelia is an open-source e-commerce platform that manages online storefronts and product catalogs. A vulnerability in its Smarty template engine allows authorized users to reference arbitrary files on the server's filesystem, which can then be executed as code with the web server's privileges. This could enable an attacker with administrative access to take complete control of the e-commerce platform and underlying server.

Technologies: [Thelia](https://junglewise.ai/threats/technologies/thelia). Vendors: [Thelia](https://junglewise.ai/threats/vendors/thelia).

## Quick answers

**Is CVE-2026-103537 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-103537 being exploited in the wild.

**How severe is CVE-2026-103537?** Medium severity, with a CVSS score of 5.4, published 12 October 2026.

**Which products and versions are affected?** Thelia 2.6.1.

**Is there a fix for CVE-2026-103537?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-103537 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-103537?** Check whether you run Thelia at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The checkTemplate() validation in Thelia 2.6.1 blocks relative path traversal sequences (../) but fails to reject absolute filesystem paths, allowing an authenticated user to load arbitrary files as Smarty templates. Smarty then compiles and executes the template code without effective security restrictions. Successful exploitation requires authorized user access and depends on filesystem layout, but can result in arbitrary code execution with web server privileges.

## Affected products

- Thelia Thelia 2.6.1

## Timeline

- 2026-10-12: disclosed

## References

- [https://kb.cert.org/vuls/id/162329](https://kb.cert.org/vuls/id/162329)

## Related threats

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- [Thelia CSRF vulnerability in back office administrative actions](https://junglewise.ai/threats/cve-2026-120206-thelia-before-3-2-0-contains-a-cross-site-request-forgery)
- [Thelia stored cross-site scripting in coupon condition summary](https://junglewise.ai/threats/cve-2026-120205-thelia-before-3-1-0-contains-a-stored-cross-site-scripting)
- [Thelia coupon usage limit bypass](https://junglewise.ai/threats/cve-2026-112285-thelia-before-3-1-5-and-3-2-x-before-3-2-4-contains-a-business)
- [Thelia unrestricted file upload via trailing space bypass](https://junglewise.ai/threats/cve-2026-109397-thelia-before-3-1-2-and-3-2-x-before-3-2-1-contains-an)