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CVE-2026-103535

Quick assessment

Affected
Thelia Thelia
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Thelia v2.6.1 的翻译编辑器中存在路径遍历和 PHP 代码注入漏洞，攻击者可利用这两个漏洞组合实现远程代码执行（RCE）。 该漏洞的核心问题在于 参数用于构建翻译文件的写入路径时，未对目录遍历序列（如 ）进行过滤或转义。这使得拥有 模块 级权限的已认证用户，能够将文件写入预期 目录之外的位置，包括可被 Web 访问的路径。 此外，翻译文件写入逻辑未对用户提供的值中的反斜杠 进行转义，导致攻击者可通过输入特殊字符突破 PHP 字符串字面量的约束，从而向翻译文件中注入可执行的 PHP 代码。 将上述两个缺陷

AI Predicted 8.1 Difficulty: Moderate EPSS 0.47% · P39

Affected Version Matrix 1

VendorProduct Version RangeStatus
Thelia Thelia ≤ 2.6.1 affected
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I. Basic Information for CVE-2026-103535

Vulnerability Information
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Vulnerability Title
CVE-2026-103535
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Thelia Thelia 0 ~ 2.6.1 -

II. Public POCs for CVE-2026-103535

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III. Intelligence Information for CVE-2026-103535

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Vendor Advisories for CVE-2026-103535 (1)

Same Patch Batch · Thelia · 2026-10-12 · 13 CVEs total

CVE-2026-109397 7.2 HIGH Thelia before 3.1.2 and 3.2.x before 3.2.1 File Upload RCE via Filename Trailing Space
CVE-2026-109396 4.2 MEDIUM Thelia before 3.1.2 and 3.2.x before 3.2.1 CSV Formula Injection via Exports
CVE-2026-103521 CVE-2026-103521
CVE-2026-103524 CVE-2026-103524
CVE-2026-103523 CVE-2026-103523
CVE-2026-103522 CVE-2026-103522
CVE-2026-103526 CVE-2026-103526
CVE-2026-103529 CVE-2026-103529
CVE-2026-103537 CVE-2026-103537
CVE-2026-103528 CVE-2026-103528
CVE-2026-103527 CVE-2026-103527
CVE-2026-107248 CVE-2026-107248

IV. Related Vulnerabilities

Same product: Thelia
Same vendor: Thelia

V. Comments for CVE-2026-103535

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