CVE-2026-103535 (GCVE-0-2026-103535)

Vulnerability from cvelistv5 – Published: 2026-10-12 14:55 – Updated: 2026-10-12 14:55
VLAI
Title
CVE-2026-103535
Summary
Thelia v2.6.1 contains path traversal and PHP code injection vulnerabilities in its translation editor that can be chained to achieve remote code execution. The `item_name` parameter, used to build the translation file's write path, does not sanitize directory traversal sequences such as `../`. This enables an authenticated user with `UPDATE`-level permissions on `admin.configuration.language` to write files outside the expected `templates/` directory, including to web‑accessible paths. Separately, the translation‑writing logic does not escape `\` in user‑supplied values, allowing inputs to break out of the PHP string literal and inject executable code into the translation file. Chained together, these flaws allow a malicious PHP file to be written to a web-accessible path and 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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      "affected": [
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          "vendor": "Thelia",
          "versions": [
            {
              "lessThanOrEqual": "2.6.1",
              "status": "affected",
              "version": "0",
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Thelia v2.6.1 contains path traversal and PHP code injection vulnerabilities in its translation editor that can be chained to achieve remote code execution. The `item_name` parameter, used to build the translation file\u0027s write path, does not sanitize directory traversal sequences such as `../`. This enables an authenticated user with `UPDATE`-level permissions on `admin.configuration.language` to write files outside the expected `templates/` directory, including to web\u2011accessible paths. Separately, the translation\u2011writing logic does not escape `\\` in user\u2011supplied values, allowing inputs to break out of the PHP string literal and inject executable code into the translation file. Chained together, these flaws allow a malicious PHP file to be written to a web-accessible path and executed with the web\u2011server\u2019s privileges."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en"
            }
          ]
        },
        {
          "descriptions": [
            {
              "description": "CWE-94 Improper Control of Generation of Code (\u0027Code Injection\u0027)",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-12T14:55:58.210Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "url": "https://kb.cert.org/vuls/id/162329"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "CVE-2026-103535",
      "x_generator": {
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        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-103535"
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  "cveMetadata": {
    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
    "assignerShortName": "certcc",
    "cveId": "CVE-2026-103535",
    "datePublished": "2026-10-12T14:55:58.210Z",
    "dateReserved": "2026-09-30T19:07:09.910Z",
    "dateUpdated": "2026-10-12T14:55:58.210Z",
    "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 v2.6.1 contains path traversal and PHP code injection vulnerabilities in its translation editor that can be chained to achieve remote code execution. The `item_name` parameter, used to build the translation file\u0027s write path, does not sanitize directory traversal sequences such as `../`. This enables an authenticated user with `UPDATE`-level permissions on `admin.configuration.language` to write files outside the expected `templates/` directory, including to web\u2011accessible paths. Separately, the translation\u2011writing logic does not escape `\\` in user\u2011supplied values, allowing inputs to break out of the PHP string literal and inject executable code into the translation file. Chained together, these flaws allow a malicious PHP file to be written to a web-accessible path and executed with the web\u2011server\u2019s privileges."
          }
        ],
        "id": "CVE-2026-103535",
        "lastModified": "2026-10-12T15:17:06.560",
        "metrics": {},
        "published": "2026-10-12T15:17:06.560",
        "references": [
          {
            "source": "cret@cert.org",
            "url": "https://kb.cert.org/vuls/id/162329"
          }
        ],
        "sourceIdentifier": "cret@cert.org",
        "vulnStatus": "Received"
      }
    }
  }
}



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