by Kastro
Paper/Archive/CVE-2026-77181

CVE-2026-77181

Apache Software Foundation Apache Syncope — Apache Syncope: ClientApp update entitlement not effective

EPSS 0.5%CVSS 9.8
critical.is priorityof 100
38
CVSS 9.8 (ADP)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 43.7.437 × 208.7No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Incorrect Authorization vulnerability in Apache Syncope. An administrator with ClientApp's update entitlement is unable to perform the related operation, while ClientApp's create entitlement is checked both for create and update operations on ClientApp. 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.

Affected

ProductAffectedFixed inSource
Apache Syncope3.0.0-M0 – 3.0.16–CNA
Apache Syncope4.0.0-M0 – 4.0.7–CNA
Apache Syncope4.1.0-M0 – 4.1.2–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisorylists.apache.org/thread/swqj31jhbz7hmmkjy42461zp9rhh9lwyrefopenwall.com/lists/oss-security/2026/09/14/16