# CVE-2026-25526: JinJava Bypass through ForTag leads to Arbitrary Java Execution

Source: https://junglewise.ai/threats/cve-2026-25526-jinjava-bypass-through-fortag-leads-to-arbitrary-java-execution  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-02-03  
License: CC BY 4.0 with a link back

CVE-2026-25526 · Severity: low · CVSS 3.1 · Published 2026-02-03

JinJava Bypass through ForTag leads to Arbitrary Java Execution

Technologies: [com.hubspot.jinjava:jinjava (Maven)](https://junglewise.ai/threats/technologies/com-hubspot-jinjava-jinjava). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven).

## Quick answers

**Is CVE-2026-25526 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-25526 being exploited in the wild.

**How severe is CVE-2026-25526?** Low severity, with a CVSS score of 3.1, published 3 February 2026.

**Which products and versions are affected?** com.hubspot.jinjava:jinjava (Maven) ECOSYSTEM:introduced=2.8.0,fixed=2.8.3.

**Is there a fix for CVE-2026-25526?** Yes. com.hubspot.jinjava:jinjava (Maven): upgrade to 2.8.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2026-25526?** Check whether you run com.hubspot.jinjava:jinjava (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- com.hubspot.jinjava:jinjava (Maven): upgrade to 2.8.3 or later

  ```sh
  # set com.hubspot.jinjava:jinjava to 2.8.3 in your pom.xml or build.gradle
  ```


## Affected products

- com.hubspot.jinjava:jinjava (Maven) ECOSYSTEM:introduced=2.8.0,fixed=2.8.3

## Identifiers

- CVE-2026-25526
- GHSA-gjx9-j8f8-7j74

## Related threats

- [HubSpot Jinjava sandbox bypass via JavaType deserialization](https://junglewise.ai/threats/cve-2025-59340-hubspot-jinjava-sandbox-bypass-via-javatype-deserialization)
- [Unauthorized access to Class instance in Jinjava](https://junglewise.ai/threats/cve-2020-12668-unauthorized-access-to-class-instance-in-jinjava)
- [Jinjava calls getClass](https://junglewise.ai/threats/cve-2018-18893-jinjava-calls-getclass)