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CVE-2026-35477— InvenTree has SSTI in PART_NAME_FORMAT bypasses CVE-2026-27629 fix via {% if part.pk %} sandbox escape

Quick assessment

Affected
inventree InvenTree
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.

InvenTree是InvenTree开源的一个开源库存管理系统。提供强大的低级库存控制和零件跟踪。 InvenTree 1.2.3至1.2.6版本存在安全漏洞，该漏洞源于验证器与实际渲染器环境不匹配，且使用虚拟实例进行验证，可能导致具有员工权限的用户在渲染时执行任意代码。

CVSS 5.5 · Medium EPSS 0.36% · P28
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I. Basic Information for CVE-2026-35477

Vulnerability Information
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Vulnerability Title
InvenTree has SSTI in PART_NAME_FORMAT bypasses CVE-2026-27629 fix via {% if part.pk %} sandbox escape
Source: CVE Program / CVE List V5
Vulnerability Description
InvenTree is an Open Source Inventory Management System. From 1.2.3 to 1.2.6, the fix for CVE-2026-27629 upgraded the PART_NAME_FORMAT validator to use jinja2.sandbox.SandboxedEnvironment. However, the actual renderer in part/helpers.py was not updated and still uses the non-sandboxed jinja2.Environment. Additionally, the validator uses a dummy Part instance with pk=None, which allows conditional template expressions to behave differently during validation versus production rendering. A staff user with settings access can craft a template that passes validation but executes arbitrary code during rendering. This issue requires access by a user with granted staff permissions. This vulnerability is fixed in 1.2.7 and 1.3.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1336
Source: CVE Program / CVE List V5
Vulnerability Title
InvenTree 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
InvenTree是InvenTree开源的一个开源库存管理系统。提供强大的低级库存控制和零件跟踪。 InvenTree 1.2.3至1.2.6版本存在安全漏洞，该漏洞源于验证器与实际渲染器环境不匹配，且使用虚拟实例进行验证，可能导致具有员工权限的用户在渲染时执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
inventree InvenTree >= 1.2.3, < 1.2.7 -

II. Public POCs for CVE-2026-35477

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III. Intelligence Information for CVE-2026-35477

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Same Patch Batch · inventree · 2026-04-08 · 5 CVEs total

CVE-2026-35478 8.3 HIGH InvenTree has Arbitrary API Token Creation
CVE-2026-35476 7.2 HIGH InvenTree Affected by Privilege Escalation via API
CVE-2026-35479 6.6 MEDIUM InvenTree Plugin Installation - Insufficient Permissions
CVE-2026-39362 InvenTree has SSRF via Remote Image Download — No IP/Hostname Validation on remote_image U

IV. Related Vulnerabilities

Same product: InvenTree
Same vendor: inventree
Same weakness: CWE-1336

V. Comments for CVE-2026-35477

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