Apache Syncope vulnerabilities

24 CVEs affecting Apache Syncope, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-63071, published 2026-07-20.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

CVE-2025-57738, published 2025-10-20. High severity, CVSS 7.2. EPSS: 23.2% chance of exploitation in the next 30 days. Apache Syncope offers the ability to extend / customize the base behavior on every deployment by allowing to provide custom implementations of a few Java interfaces; such implementations can be…
CVE-2018-1322, published 2018-03-20. Medium severity, CVSS 4.9. EPSS: 19.9% chance of exploitation in the next 30 days. An administrator with user search entitlements in Apache Syncope 1.2.x before 1.2.11, 2.0.x before 2.0.8, and unsupported releases 1.0.x and 1.1.x which may be also affected, can recover sensitive…
CVE-2018-1321, published 2018-03-20. High severity, CVSS 7.2. EPSS: 17.5% chance of exploitation in the next 30 days. An administrator with report and template entitlements in Apache Syncope 1.2.x before 1.2.11, 2.0.x before 2.0.8, and unsupported releases 1.0.x and 1.1.x which may be also affected, can use XSL…
CVE-2014-3503, published 2014-07-11. Medium severity, CVSS 5.0. EPSS: 6% chance of exploitation in the next 30 days. Apache Syncope 1.1.x before 1.1.8 uses weak random values to generate passwords, which makes it easier for remote attackers to guess the password via a brute force attack.
CVE-2020-1959, published 2020-05-04. Critical severity, CVSS 9.8. EPSS: 5% chance of exploitation in the next 30 days. A Server-Side Template Injection was identified in Apache Syncope prior to 2.1.6 enabling attackers to inject arbitrary Java EL expressions, leading to an unauthenticated Remote Code Execution (RCE)…
CVE-2020-1961, published 2020-05-04. Critical severity, CVSS 9.8. EPSS: 4.8% chance of exploitation in the next 30 days. 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…
CVE-2014-0111, published 2014-04-17. Medium severity, CVSS 6.5. EPSS: 3.3% chance of exploitation in the next 30 days. Apache Syncope 1.0.0 before 1.0.9 and 1.1.0 before 1.1.7 allows remote administrators to execute arbitrary Java code via vectors related to Apache Commons JEXL expressions, "derived schema…
CVE-2020-11977, published 2020-09-15. High severity, CVSS 7.2. EPSS: 2.9% chance of exploitation in the next 30 days. In Apache Syncope 2.1.X releases prior to 2.1.7, when the Flowable extension is enabled, an administrator with workflow entitlements can use Shell Service Tasks to perform malicious operations,…
CVE-2018-17186, published 2018-11-06. High severity, CVSS 7.2. EPSS: 2.5% chance of exploitation in the next 30 days. An administrator with workflow definition entitlements can use DTD to perform malicious operations, including but not limited to file read, file write, and code execution.
CVE-2026-23795, published 2026-02-03. Medium severity, CVSS 4.9. EPSS: 1.9% chance of exploitation in the next 30 days. Improper Restriction of XML External Entity Reference vulnerability in Apache Syncope Console. An administrator with adequate entitlements to create or edit Keymaster parameters via Console can…

Latest

CVE-2026-63071, published 2026-07-20. Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days. Improper Isolation or Compartmentalization vulnerability in Apache Syncope. An administrator with adequate entitlements for Implementations can create a malicious Groovy class containing untrusted…
CVE-2026-62418, published 2026-07-20. High severity, CVSS 8.1. EPSS: 0.5% chance of exploitation in the next 30 days. Low-privileged authenticated Server-Side Request Forgery (SSRF) vulnerability in Apache Syncope via Connectors and Resources check. This issue affects Apache Syncope: from 3.0.0-M0 through…
CVE-2026-62183, published 2026-07-20. Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days. Improper Privilege Management vulnerability in Apache Syncope. When: * the all-Java user workflow adapter is configured, or * the Flowable user workflow adapter is configured, bearing a BPMN…
CVE-2026-57308, published 2026-07-20. Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days. Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Apache Syncope. An administrator with adequate entitlements can achieve execution of arbitrary…
CVE-2026-53421, published 2026-07-20. Critical severity, CVSS 9.8. EPSS: 1.1% chance of exploitation in the next 30 days. Improper Isolation or Compartmentalization vulnerability in Apache Syncope. An administrator with adequate entitlements can achieve remote code execution through the connector subsystem by relying…
CVE-2026-53405, published 2026-07-20. Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days. Improper Isolation or Compartmentalization vulnerability in Apache Syncope. An administrator with adequate entitlements can import arbitrary BPMN process definitions via the REST API and then start…
CVE-2026-42797, published 2026-05-25. Medium severity, CVSS 4.9. EPSS: 0.6% chance of exploitation in the next 30 days. Exposure of Sensitive Information Through Data Queries vulnerability in Apache Syncope. An administrator with adequate entitlements for Derived Schemas can create a malicious JEXL expression which…
CVE-2026-42782, published 2026-05-25. High severity, CVSS 7.2. EPSS: 0.9% chance of exploitation in the next 30 days. Improper Isolation or Compartmentalization vulnerability in Apache Syncope. An administrator with adequate entitlements for Implementations can create a malicious Groovy class containing untrusted…
CVE-2026-23794, published 2026-02-03. Medium severity, CVSS 6.8. EPSS: 0.5% chance of exploitation in the next 30 days. Reflected XSS in Apache Syncope's Enduser Login page. An attacker that tricks a legitimate user into clicking a malicious link and logging in to Syncope Enduser could steal that user's…