cve.bz

CVE-2021-42567

6.1 mediumEPSS 8.2%

Medium (6.1) in apereo central authentication service. EPSS 8.2% chance of exploitation in the next 30 days. Fixed in org.apereo.cas:cas-server-core-web 6.4.2.

Apereo CAS through 6.4.1 allows XSS via POST requests sent to the REST API endpoints.

Severity

CVSS 3.1

6.1 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
8.2% chance of exploitation in the next 30 days; higher than 94% of CVEs (scores of 2026-10-31)
CWE
CWE-79
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-gfhx-jjwq-63gvMavenorg.apereo.cas:cas-server-core-web<6.4.26.4.2

References

Check your stackJSON