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CRITICAL

CVE-2026-25526

JinJava Bypass through ForTag leads to Arbitrary Java Execution

CVSS v3

9.8

CRITICAL

EPSS Score

1.0 %

exploit probability, as of 2026-10-02

CISA KEV

No

known exploited

Exploitation

none

SSVC status

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.

Technical details

Published
2026-02-04
Last Modified
2026-02-20

Frequently asked questions

What is CVE-2026-25526?

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.

Is CVE-2026-25526 actively exploited?

Active exploitation of CVE-2026-25526 has not been confirmed. Its EPSS score was 1.0% on 2026-10-02, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-25526?

CVE-2026-25526 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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