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Vulnerabilities

Vulnerability · CVE-2026-42782

Improper Isolation or Compartmentalization vulnerability in Apache Syncope.

Published May 25, 2026 · catalog updated Jul 24, 2026 · Improper Isolation or Compartmentalization

Check if you run it

No confirmed exploitation is on record for CVE-2026-42782. EPSS is 0.86%. Act only if a listed version of Improper Isolation or Compartmentalization is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Improper Isolation or Compartmentalization).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.86%
Remediation
Advisory link
Affected products
cpe apache/syncope

Improper Isolation or Compartmentalization vulnerability in Apache Syncope. An administrator with adequate entitlements for Implementations can create a malicious Groovy class containing untrusted code reaching a non-sandboxed execution path via the class static initializer. This issue affects Apache Syncope: 3.0 through 3.0.16, 4.0 through 4.0.5, 4.1.0. Users are recommended to upgrade to version 4.0.6 / 4.1.1, which fix this issue by forcing even the static initializer in Groovy code to run in a sandbox.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe apache/syncope4.1.0

How to fix CVE-2026-42782

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-42782. EPSS is 0.86%. Act only if a listed version of Improper Isolation or Compartmentalization is installed.

Which versions are affected?

Compare what you have installed with 4.1.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-653. EPSS 0.86%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 25, 2026 · NIST NVD

    Detected

    Improper Isolation or Compartmentalization vulnerability in Apache Syncope. An administrator with adequate entitlements for Implementations can create a malicious Groovy class containing untrusted code reaching a non-sandboxed execution path via the class static initializer. This issue affects Apache Syncope: 3.0 through 3.0.16, 4.0 through 4.0.5, 4.1.0. Users are recommended to upgrade to version

  2. Jul 24, 2026 · NIST NVD

    Updated

    Improper Isolation or Compartmentalization vulnerability in Apache Syncope. An administrator with adequate entitlements for Implementations can create a malicious Groovy class containing untrusted code reaching a non-sandboxed execution path via the class static initializer. This issue affects Apache Syncope: 3.0 through 3.0.16, 4.0 through 4.0.5, 4.1.0. Users are recommended to upgrade to version

Sources

  • CVE.orgVulnerability recordCVE-2026-42782

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-42782

    30-day exploitation probability 0.9%

    first.org
  • NIST NVDVulnerability recordCVE-2026-42782

    Improper Isolation or Compartmentalization vulnerability in Apache Syncope. An administrator with adequate entitlements for Implementations can create a malicious Groovy class containing untrusted code reaching a non-sandboxed execution path via the class static initializer. Th

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.