Medium severity · published Dec 7, 2021
CVE-2021-42567
Apereo CAS through 6.4.1 allows XSS via POST requests sent to the REST API endpoints
6.1
CVSS
8.2%
EPSS
No
On KEV
Description
Apereo CAS through 6.4.1 allows XSS via POST requests sent to the REST API endpoints.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)8.2% · higher than 95% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CA
Central Authentication Service · Apereo
6.3.0 before 6.3.7.1; 6.4.0 before 6.4.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-42567
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-42567
Patch
https://apereo.github.io/2021/10/18/restvuln/
Release Notes
https://github.com/apereo/cas/releases
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