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Critical severity · published Sep 14, 2026
CVE-2026-73668
Apache Syncope: Cross-realm disclosure of confidential ConnId bundles configuration values
9.8
CVSS
0.5%
EPSS
No
On KEV
Description
Incorrect Authorization vulnerability in Apache Syncope. An administrator with adequate entitlements in a given Realm may be able to read via REST the full Connector configuration, confidential properties included, scoped in another Realm and thus be able to effectively duplicate such Connector instance into the Realm they have administration rights for. 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)0.5% · higher than 43% 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
Affected product
AS
Apache Syncope
Apache Software Foundation
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-73668
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-73668
lists.apache.org
https://lists.apache.org/thread/4lgsbbgc72mngf6mc1q5b1cj3d9nyphn
www.openwall.com
http://www.openwall.com/lists/oss-security/2026/09/14/11
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