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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Hubspot | Jinjava | < 2.7.6 |
Related Weaknesses (CWE)
References
- https://github.com/HubSpot/jinjava/commit/3d02e504d8bbb13bf3fe019e9ca7b51dfce7a9Patch
- https://github.com/HubSpot/jinjava/commit/c7328dce6030ac718f88974196035edafef244Patch
- https://github.com/HubSpot/jinjava/releases/tag/jinjava-2.7.6ProductRelease Notes
- https://github.com/HubSpot/jinjava/releases/tag/jinjava-2.8.3ProductRelease Notes
- https://github.com/HubSpot/jinjava/security/advisories/GHSA-gjx9-j8f8-7j74PatchVendor Advisory
FAQ
What is CVE-2026-25526?
CVE-2026-25526 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 byp...
How severe is CVE-2026-25526?
CVE-2026-25526 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-25526?
Check the references section above for vendor advisories and patch information. Affected products include: Hubspot Jinjava.