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CVE-2026-42782

30
FAUCET Score

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.

First published: May 25, 2026Last modified: May 25, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.0.0, <= 3.0.16CPE matchmatch criteria
cpe:2.3:a:apache:syncope:*:*:*:*:*:*:*:*
>= 4.0.0, < 4.0.6CPE matchmatch criteria
cpe:2.3:a:apache:syncope:*:*:*:*:*:*:*:*
4.1.0CPE matchmatch criteria
cpe:2.3:a:apache:syncope:4.1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.65%
Probability of exploitation in next 30 days
EPSS Percentile
47.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0065 is in the 26th percentile among its peer group of 5,531 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

mavenpatch availablevia ghsa
Product: org.apache.syncope.core:syncope-core-springFixed in: 4.0.6
mavenpatch availablevia ghsa
Product: org.apache.syncope.core:syncope-core-springFixed in: 4.1.1
apachevendor investigatingvia vendor_rss
View patch

Vendor Advisories (2)

mavenGHSA-gq7g-vg2q-jvq3high

Apache Syncope has an Improper Isolation or Compartmentalization vulnerability

May 26, 2026
apacheapache:www.mail-archive.com/[email protected]/msg11139.html

CVE-2026-42782: Apache Syncope: Post-auth RCE via Groovy static

May 25, 2026

References

openwall.com / lists/oss-security/2026/05/25/4
Mailing ListThird Party Advisory
lists.apache.org / thread/b869ms0ofrd129f7tgsn9flxgv9ztg2r
Mailing ListVendor Advisory