Critical severity · published Sep 14, 2026
CVE-2026-77051
Apache Syncope: SQL injection via unsanitized entityKey and opEvent in Audit Events search
9.8
CVSS
0.6%
EPSS
No
On KEV
Description
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 SQL via stacked queries, leveraging unsanitized entityKey and opEvent parameters.
This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.7, from 4.1.0-M0 through 4.1.2.
Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Apache Syncope · Apache Software Foundation
3.0.0-M0 through 3.0.16; 4.0.0-M0 through 4.0.7; 4.1.0-M0 through 4.1.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-77051
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-77051
lists.apache.org
https://lists.apache.org/thread/lv2mm7wojmxwz29jr0zy469p9zbz23f7
www.openwall.com
http://www.openwall.com/lists/oss-security/2026/09/14/14
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