CVE-2026-25526

Name: CVE-2026-25526
Creator: NVD / NIST
Published: 2026-02-04T22:15:59.51+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.89%

Last modified Jun 17, 2026

CVE-2026-25526 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 0.89% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.89%

54.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1336

Affected Software

Vendor	Product	Versions
Hubspot	Jinjava	< 2.7.6
Hubspot	Jinjava	>= 2.8.0, < 2.8.3

References

https://github.com/HubSpot/jinjava/commit/3d02e504d8bbb13bf3fe019e9ca7b51dfce7a998Patch
https://github.com/HubSpot/jinjava/commit/c7328dce6030ac718f88974196035edafef24441Patch
https://github.com/HubSpot/jinjava/releases/tag/jinjava-2.7.6Product, Release Notes
https://github.com/HubSpot/jinjava/releases/tag/jinjava-2.8.3Product, Release Notes
https://github.com/HubSpot/jinjava/security/advisories/GHSA-gjx9-j8f8-7j74Patch, Vendor Advisory

Timeline

Published: Feb 4, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-25526?

How severe is CVE-2026-25526?

CVE-2026-25526 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.89% probability of exploitation in the next 30 days.

How do I fix CVE-2026-25526?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-25526?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST