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Fencer Intel
high 7.5

CVE-2026-73236 json

Apache Syncope: Cross-Realm authorization bypass in delegated administration

published last mo. modified last mo. also EUVD-2026-77474

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits
0
none known

Summary

Incorrect Authorization vulnerability in Apache Syncope.

Delegated administration security checks are based on Realm hierarchy and enforced via prefix matches. Due to incorrect implementation, two sibling Realms whose names begin with the same string cannot be correctly distinguished, resulting in incorrect authorization.

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.

Patch / fix

  • apache syncope 4.0.8, 4.1.3
  • org.apache.syncope.client.idrepo syncope-client-idrepo-common-ui 4.0.8, 4.1.3
  • org.apache.syncope.client.idrepo syncope-client-idrepo-console 4.0.8, 4.1.3
  • org.apache.syncope.client syncope-client-console 4.0.8, 4.1.3
  • org.apache.syncope.core.idm syncope-core-idm-logic 4.0.8, 4.1.3
  • org.apache.syncope.core syncope-core-provisioning-api 4.0.8, 4.1.3
  • org.apache.syncope.core syncope-core-spring 4.0.8, 4.1.3
  • org.apache.syncope.core syncope-core-workflow-java 4.0.8, 4.1.3
  • org.apache.syncope.ext.flowable syncope-ext-flowable-bpmn 4.0.8, 4.1.3

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CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
last mo.

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

  • Apache Software Foundation Apache Syncope

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.