CVE-2026-25526: JinJava Bypass through ForTag leads to Arbitrary Java Execution
Critical · CVSS 9.8 (CVSS 3.1)EPSS 0.98%, 62th percentilePublished Updated Assigner: GitHub_M
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.
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · CWE-1336
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
HubSpot: jinjava
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- github.com/HubSpot/jinjava/commit/3d02e504d8bbb13bf3fe019e9ca7b51dfce7a998 (opens in new tab)
- github.com/HubSpot/jinjava/commit/c7328dce6030ac718f88974196035edafef24441 (opens in new tab)
- github.com/HubSpot/jinjava/releases/tag/jinjava-2.7.6 (opens in new tab)
- github.com/HubSpot/jinjava/releases/tag/jinjava-2.8.3 (opens in new tab)
- github.com/HubSpot/jinjava/security/advisories/GHSA-gjx9-j8f8-7j74 (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)