Medium severity6.1NVD Advisory· Published Dec 7, 2021· Updated Jun 17, 2026
CVE-2021-42567
CVE-2021-42567
Description
Apereo CAS through 6.4.1 allows XSS via POST requests sent to the REST API endpoints.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.apereo.cas:cas-server-core-webMaven | < 6.4.2 | 6.4.2 |
Affected products
3- cpe:2.3:a:apereo:central_authentication_service:*:*:*:*:*:*:*:*Range: >=6.3.0,<6.3.7.1
- Apereo/CASdescription
Patches
Vulnerability mechanics
References
6- apereo.github.io/2021/10/18/restvuln/nvdPatchThird Party Advisory
- github.com/advisories/GHSA-gfhx-jjwq-63gvghsaADVISORY
- github.com/apereo/cas/releasesnvdRelease NotesThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2021-42567ghsaADVISORY
- apereo.github.io/2021/10/18/restvulnghsaWEB
- github.com/apereo/cas/commit/376bf087d6d4267f61fc9f8028aa0d1ef407c3f0ghsaWEB
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