CVE-2026-25526

CRITICAL
2026-02-04 [email protected] GHSA-gjx9-j8f8-7j74
9.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
Patch Released
Feb 20, 2026 - 21:00 nvd
Patch available
CVE Published
Feb 04, 2026 - 22:15 nvd
CRITICAL 9.8

Tags

Java Golang Django Jinjava

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.

Analysis

JinJava template engine has a server-side template injection vulnerability enabling arbitrary code execution through crafted Jinja-style templates.

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Remediation

Within 24 hours: identify all systems running JinJava and determine which versions are deployed; isolate or restrict network access to affected applications if immediate patching is not feasible. Within 7 days: apply vendor patches (upgrade to JinJava 2.7.6 or 2.8.3 or later) to all affected systems and validate patches in a test environment first. …

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Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +49
POC: 0

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CVE-2026-25526 vulnerability details – vuln.today
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