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I. Basic Information for CVE-2026-25526
Vulnerability Information
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Vulnerability Title
JinJava Bypass through ForTag leads to Arbitrary Java Execution
Source: NVD (National Vulnerability Database)
Vulnerability Description
JinJava is a Java-based template engine based on django template syntax, adapted to render jinja templates. Prior to versions 2.7.6 and 2.8.3, JinJava is vulnerable to arbitrary Java execution via bypass through ForTag. This allows arbitrary Java class instantiation and file access bypassing built-in sandbox restrictions. This issue has been patched in versions 2.7.6 and 2.8.3.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1336
Source: NVD (National Vulnerability Database)
Vulnerability Title
HubSpot Jinjava 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HubSpot Jinjava是美国HubSpotn个人开发者的一个应用软件。提供基于Java的模板模板引擎，基于Django模板语法，适用于呈现jinja模板。 HubSpot Jinjava 2.7.6之前版本和2.8.3之前版本存在安全漏洞，该漏洞源于通过ForTag绕过限制，可能导致任意Java执行。
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
VendorProductAffected VersionsCPESubscribe
HubSpotjinjava < 2.7.6 -
II. Public POCs for CVE-2026-25526
#POC DescriptionSource LinkShenlong Link
1lab setup + exploits for CVE-2026-25526https://github.com/av4nth1ka/jinjava-cve-2026-25526-pocPOC Details
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Qwen3.5-35B-A3B-UD-Q4_K_XL.gguf · 7266 chars
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III. Intelligence Information for CVE-2026-25526
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IV. Related Vulnerabilities
Same product: jinjava
Same vendor: HubSpot
Same weakness: CWE-1336
V. Comments for CVE-2026-25526

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