CVE-2026-25526

CRITICAL9.8

JinJava Bypass through ForTag leads to Arbitrary Java Execution

Published Feb 4, 2026

Modified 3 weeks ago

Details

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.

References

WEB

https://github.com/HubSpot/jinjava/commit/3d02e504d8bbb13bf3fe019e9ca7b51dfce7a998

WEB

https://github.com/HubSpot/jinjava/commit/c7328dce6030ac718f88974196035edafef24441

WEB

https://github.com/HubSpot/jinjava/releases/tag/jinjava-2.7.6

WEB

https://github.com/HubSpot/jinjava/releases/tag/jinjava-2.8.3

WEB

https://github.com/HubSpot/jinjava/security/advisories/GHSA-gjx9-j8f8-7j74

ADVISORY