CVE-2020-1961
Injection in Apache Syncope
Vulnerability to Server-Side Template Injection on Mail templates for Apache Syncope 2.0.X releases prior to 2.0.15, 2.1.X releases prior to 2.1.6, enabling attackers to inject arbitrary JEXL expressions, leading to Remote Code Execution (RCE) was discovered.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Vulnerability to Server-Side Template Injection on Mail templates for Apache Syncope 2.0.X releases prior to 2.0.15, 2.1.X releases prior to 2.1.6, enabling attackers to inject arbitrary JEXL expressions, leading to Remote Code Execution (RCE) was discovered.
- Record
CVE-2020-1961- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-74
- Updated
- 2026-11-02
CVE List No score
Vulnerability to Server-Side Template Injection on Mail templates for Apache Syncope 2.0.X releases prior to 2.0.15, 2.1.X releases prior to 2.1.6, enabling attackers to inject arbitrary JEXL expressions, leading to Remote Code Execution (RCE) was discovered.
- Record
CVE-2020-1961- Updated
- 2026-11-02
EUVDEUVD-2021-1261 No score
Vulnerability to Server-Side Template Injection on Mail templates for Apache Syncope 2.0.X releases prior to 2.0.15, 2.1.X releases prior to 2.1.6, enabling attackers to inject arbitrary JEXL expressions, leading to Remote Code Execution (RCE) was discovered.
- Record
EUVD-2021-1261- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4w4p-xwrr-9crh
Injection in Apache Syncope
Vulnerability to Server-Side Template Injection on Mail templates for Apache Syncope 2.0.X releases prior to 2.0.15, 2.1.X releases prior to 2.1.6, enabling attackers to inject arbitrary JEXL expressions, leading to Remote Code Execution (RCE) was discovered.
- Record
GHSA-4w4p-xwrr-9crh- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-74
- Updated
- 2026-11-02
OSV
Vulnerability to Server-Side Template Injection on Mail templates for Apache Syncope 2.0.X releases prior to 2.0.15, 2.1.X releases prior to 2.1.6, enabling attackers to inject arbitrary JEXL expressions, leading to Remote Code Execution (RCE) was discovered.
- Record
CVE-2020-1961- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-4w4p-xwrr-9crh
Injection in Apache Syncope
Vulnerability to Server-Side Template Injection on Mail templates for Apache Syncope 2.0.X releases prior to 2.0.15, 2.1.X releases prior to 2.1.6, enabling attackers to inject arbitrary JEXL expressions, leading to Remote Code Execution (RCE) was discovered.
- Record
GHSA-4w4p-xwrr-9crh- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-74
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.apache.syncope:syncope-coreMaven |
2.0.0 up to 2.0.15 | 2.0.15 |
org.apache.syncope:syncope-coreMaven |
2.1.0 up to 2.1.6 | 2.1.6 |
org.apache.syncope:syncope-coreMaven |
2.0.0 up to 2.0.15, plus listed versions 2.0.12.0.102.0.112.0.122.0.13 Show 9 moreShow less2.0.142.0.22.0.32.0.42.0.52.0.62.0.72.0.82.0.9 |
2.0.15 |
org.apache.syncope:syncope-coreMaven |
2.1.0 up to 2.1.6, plus listed versions 2.1.12.1.22.1.32.1.42.1.5 |
2.1.6 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-1961 is a critical vulnerability (CVSS 9.8) in Apache Syncope, published May 4, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.80%, the 92nd percentile. Fixed in org.apache.syncope:syncope-core 2.0.15.