CVE-2020-12668
Unauthorized access to Class instance in Jinjava
Jinjava before 2.5.4 allow access to arbitrary classes by calling Java methods on objects passed into a Jinjava context. This could allow for abuse of the application class loader, including Arbitrary File Disclosure.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Jinjava before 2.5.4 allow access to arbitrary classes by calling Java methods on objects passed into a Jinjava context. This could allow for abuse of the application class loader, including Arbitrary File Disclosure.
- Record
CVE-2020-12668- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 6.8 Medium
AV:N/AC:L/Au:S/C:C/I:N/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
CVE List No score
Jinjava before 2.5.4 allow access to arbitrary classes by calling Java methods on objects passed into a Jinjava context. This could allow for abuse of the application class loader, including Arbitrary File Disclosure.
- Record
CVE-2020-12668- Updated
- 2026-11-02
EUVDEUVD-2022-0760 No score
Jinjava before 2.5.4 allow access to arbitrary classes by calling Java methods on objects passed into a Jinjava context. This could allow for abuse of the application class loader, including Arbitrary File Disclosure.
- Record
EUVD-2022-0760- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2hjr-fg6c-v2h6
Unauthorized access to Class instance in Jinjava
Jinjava before 2.5.4 allow access to arbitrary classes by calling Java methods on objects passed into a Jinjava context. This could allow for abuse of the application class loader, including Arbitrary File Disclosure.
- Record
GHSA-2hjr-fg6c-v2h6- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
OSV
Jinjava before 2.5.4 allow access to arbitrary classes by calling Java methods on objects passed into a Jinjava context. This could allow for abuse of the application class loader, including Arbitrary File Disclosure.
- Record
CVE-2020-12668- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-2hjr-fg6c-v2h6
Unauthorized access to Class instance in Jinjava
Jinjava before 2.5.4 allow access to arbitrary classes by calling Java methods on objects passed into a Jinjava context. This could allow for abuse of the application class loader, including Arbitrary File Disclosure.
- Record
GHSA-2hjr-fg6c-v2h6- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
com.hubspot.jinjava:jinjavaMaven |
before 2.5.4 | 2.5.4 |
com.hubspot.jinjava:jinjavaMaven |
before 2.5.4, plus listed versions 1.0.01.0.11.0.21.0.31.0.4 Show 45 moreShow less1.0.51.0.61.0.71.0.81.0.92.0.02.0.12.0.102.0.11-java72.0.22.0.32.0.42.0.52.0.62.0.72.0.82.0.92.1.02.1.12.1.102.1.112.1.122.1.132.1.142.1.152.1.162.1.172.1.182.1.192.1.22.1.32.1.42.1.52.1.62.1.72.1.82.1.92.2.02.2.12.2.102.2.22.2.32.2.42.2.52.2.6 |
2.5.4 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-12668 is a medium vulnerability (CVSS 6.5) in Hubspot Jinjava, published February 19, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.81%, the 78th percentile. Fixed in com.hubspot.jinjava:jinjava 2.5.4.
References
github.com/HubSpot/jinjava/compare/jinjava-2.5.3...jinjava-2.5.4
securitylab.github.com/advisories/GHSL-2020-072-hubspot_jinjava
nvd.nist.gov/vuln/detail/CVE-2020-12668
Left out here: 29 versions. The JSON record has them.