CVE-2026-103537 (GCVE-0-2026-103537)

Vulnerability from cvelistv5 – Published: 2026-10-12 14:56 – Updated: 2026-10-12 14:56
VLAI
Title
CVE-2026-103537
Summary
Thelia 2.6.1 contains an absolute path traversal vulnerability in its Smarty template handling that enables SSTI and remote code execution. The `checkTemplate()` validation restricts relative directory traversal sequences such as `../` but does not reject absolute paths, allowing an authorized user to supply an arbitrary filesystem path as a template. Smarty then loads and compiles the referenced file without an effective security policy, so depending on filesystem layout and deployment configuration, template code in the file can be executed with the web server's privileges.
Severity
No CVSS data available.
CWE
Assigner
certcc CNA under the mitre root
CNA scorecard E 42/100 over 153 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Thelia Thelia Affected: 0 , ≤ 2.6.1 (custom)
guessed Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "Thelia",
          "vendor": "Thelia",
          "versions": [
            {
              "lessThanOrEqual": "2.6.1",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Thelia 2.6.1 contains an absolute path traversal vulnerability in its Smarty template handling that enables SSTI and remote code execution. The `checkTemplate()` validation restricts relative directory traversal sequences such as `../` but does not reject absolute paths, allowing an authorized user to supply an arbitrary filesystem path as a template. Smarty then loads and compiles the referenced file without an effective security policy, so depending on filesystem layout and deployment configuration, template code in the file can be executed with the web server\u0027s privileges."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-1336 Improper Neutralization of Special Elements Used in a Template Engine",
              "lang": "en"
            }
          ]
        },
        {
          "descriptions": [
            {
              "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-12T14:56:21.364Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "url": "https://kb.cert.org/vuls/id/162329"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "CVE-2026-103537",
      "x_generator": {
        "engine": "VINCE 3.0.50",
        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-103537"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
    "assignerShortName": "certcc",
    "cveId": "CVE-2026-103537",
    "datePublished": "2026-10-12T14:56:21.364Z",
    "dateReserved": "2026-09-30T19:07:13.961Z",
    "dateUpdated": "2026-10-12T14:56:21.364Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "Thelia",
                "vendor": "Thelia",
                "versions": [
                  {
                    "lessThanOrEqual": "2.6.1",
                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "cret@cert.org"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Thelia 2.6.1 contains an absolute path traversal vulnerability in its Smarty template handling that enables SSTI and remote code execution. The `checkTemplate()` validation restricts relative directory traversal sequences such as `../` but does not reject absolute paths, allowing an authorized user to supply an arbitrary filesystem path as a template. Smarty then loads and compiles the referenced file without an effective security policy, so depending on filesystem layout and deployment configuration, template code in the file can be executed with the web server\u0027s privileges."
          }
        ],
        "id": "CVE-2026-103537",
        "lastModified": "2026-10-12T15:17:06.667",
        "metrics": {},
        "published": "2026-10-12T15:17:06.667",
        "references": [
          {
            "source": "cret@cert.org",
            "url": "https://kb.cert.org/vuls/id/162329"
          }
        ],
        "sourceIdentifier": "cret@cert.org",
        "vulnStatus": "Received"
      }
    }
  }
}



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