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Vulnerabilities

Vulnerability · CVE-2026-103529

Thelia v2.6.0 permits authenticated administrators to upload and install modules via the ZIP upload function without validating or sandboxing embedded PHP code.

Published Oct 12, 2026 · catalog updated Oct 15, 2026 · CERT/CC

Check if you run it

No confirmed exploitation is on record for CVE-2026-103529. EPSS is 0.23%. Act only if a listed version of CERT/CC is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.23%
Remediation
Not established
Affected products
CERT/CC

Thelia v2.6.0 permits authenticated administrators to upload and install modules via the ZIP upload function without validating or sandboxing embedded PHP code. An attacker can include malicious PHP code in a module's method which will then be executed upon installation, enabling remote code execution with the privileges of the web server.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-103529

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-103529. EPSS is 0.23%. Act only if a listed version of CERT/CC is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-434: Unrestricted Upload of File with Dangerous Type. EPSS 0.23%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 13, 2026 · CERT/CC Vulnerability Notes

    Detected

    Overview Thelia versions 2.6.0 and 2.6.1 contain multiple vulnerabilities relating to file management, Smarty templating, module installation, and administrative workflows. Successful exploitation of these issues could enable remote code execution (RCE), server-side template injection (SSTI), stored and reflected cross-site scripting (XSS), unauthorized URL redirection, and other risks that expose

  2. Oct 15, 2026 · NIST NVD

    Updated

    Thelia v2.6.0 permits authenticated administrators to upload and install modules via the ZIP upload function without validating or sandboxing embedded PHP code. An attacker can include malicious PHP code in a module's method which will then be executed upon installation, enabling remote code execution with the privileges of the web server.

Sources

  • CERT/CC Vulnerability NotesGovernment advisoryCVE-2026-103529

    Overview Thelia versions 2.6.0 and 2.6.1 contain multiple vulnerabilities relating to file management, Smarty templating, module installation, and administrative workflows. Successful exploitation of these issues could enable remote code execution (RCE), server-side template inje

    kb.cert.org
  • CVE.orgVulnerability recordCVE-2026-103529

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-103529

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-103529

    Thelia v2.6.0 permits authenticated administrators to upload and install modules via the ZIP upload function without validating or sandboxing embedded PHP code. An attacker can include malicious PHP code in a module's method which will then be executed upon installati

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.