CVE-2026-77181CWE-863broken-access-control

CVE-2026-77181

Critical · published September 14, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
42.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00512 · 42.8th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-09-14T17:18Z
References (2)
https://lists.apache.org/thread/swqj31jhbz7hmmkjy42461zp9rhh9lwy · [email protected]http://www.openwall.com/lists/oss-security/2026/09/14/16 · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 17 SEP 03:32Z
    EPSS moved — → 0%
    epss
  • 14 SEP 12:48Z
    Apache Syncope: ClientApp update entitlement not effective
    cvelistv5