CVE-2023-4612: apereo foundation cas
Vulnerability summary
CVE-2023-4612 is a critical (CVSS 9.8) vulnerability in apereo foundation cas. EPSS estimates a 0.94% chance of exploitation in the next 30 days, higher than 60.3% of scored vulnerabilities.
Timeline
- 09-11-2023PublishedVulnerability first disclosed.
- 26-02-2025Last modifiedVulnerability information updated.
Description
Improper Authentication vulnerability in Apereo CAS in jakarta.servlet.http.HttpServletRequest.getRemoteAddr method allows Multi-Factor Authentication bypass.This issue affects CAS: through 7.0.0-RC7. It is unknown whether in new versions the issue will be fixed. For the date of publication there is no patch, and the vendor does not treat it as a vulnerability.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.94%
Chance of exploitation in the next 30 days
Percentile
60%
Versus all other CVEs
30-day change
0.00 pp
From 0.94% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-302Authentication Bypass by Assumed-Immutable DataThe authentication scheme or implementation uses key data elements that are assumed to be immutable, but can be controlled or modified by the attacker.
- CWE-287Improper AuthenticationWhen an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Affected systems
Apereo1 product
- central_authentication_service< 7.0.0 | 7.0.0:rc1 | 7.0.0:rc2 | 7.0.0:rc3 | 7.0.0:rc4 | 7.0.0:rc5 | 7.0.0:rc6 | 7.0.0:rc7
Apereo foundation1 product
- cas≤ 7.0.0-RC7
2 vendors · 2 products
References
2 links- cert.pl/posts/2023/11/CVE-2023-4612/Third Party Advisory
- cert.pl/en/posts/2023/11/CVE-2023-4612/Third Party Advisory