CVE-2026-25526

EUVD-2026-5336
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub_MCNA
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 9%
Affected Products (NVD)
VendorProductVersion
hubspotjinjava
𝑥
< 2.7.6
hubspotjinjava
2.8.0 ≤
𝑥
< 2.8.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/HubSpot/jinjava/commit/3d02e504d8bbb13bf3fe019e9ca7b51dfce7a998
https://github.com/HubSpot/jinjava/commit/c7328dce6030ac718f88974196035edafef24441
https://github.com/HubSpot/jinjava/releases/tag/jinjava-2.7.6
https://github.com/HubSpot/jinjava/releases/tag/jinjava-2.8.3
https://github.com/HubSpot/jinjava/security/advisories/GHSA-gjx9-j8f8-7j74