CVE-2026-25526
JinJava Bypass through ForTag leads to Arbitrary Java Execution
CRITICAL 9.8EPSS 1.0%
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.
- Affected
- HubSpot · jinjava
- CVSS v3.1 GITHUB
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 1.00% chance of exploitation in the next 30 days, 62nd percentile
- Published
- 2026-02-04
- Updated
- 2026-02-05
Proof-of-concept exploits (1)
- av4nth1ka/jinjava-cve-2026-25526-poc3★ · 2026-02-12
Security advisories
- HubSpot/jinjava/security/advisories/GHSA-gjx9-j8f8-7j74
- advisories/GHSA-gjx9-j8f8-7j74
- HubSpot/jinjava/commit/3d02e504d8bbb13bf3fe019e9ca7b51dfce7a998