How severe is CVE-2024-4399?

CVE-2024-4399 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2024-4399 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-4399?

CVE-2024-4399 affects Apereo Central Authentication Service. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-4399?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-4399 have an EU (EUVD) identifier?

Yes. CVE-2024-4399 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-44030.

When was CVE-2024-4399 published?

CVE-2024-4399 was published on 2024-05-23 and last updated on 2026-06-17.

CVE-2024-4399

CVE-2024-4399 is a critical-severity vulnerability in Apereo Central Authentication Service with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-44030
Weakness: CWE-918
Affected product: Apereo Central Authentication Service
Published: 2024-05-23
Last modified: 2026-06-17

Description

The does not validate a parameter before making a request to it, which could allow unauthenticated users to perform SSRF attack

Frequently asked questions

What is CVE-2024-4399?: The does not validate a parameter before making a request to it, which could allow unauthenticated users to perform SSRF attack
How severe is CVE-2024-4399?: CVE-2024-4399 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2024-4399 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-4399?: CVE-2024-4399 affects Apereo Central Authentication Service. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-4399?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-4399 have an EU (EUVD) identifier?: Yes. CVE-2024-4399 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-44030.
When was CVE-2024-4399 published?: CVE-2024-4399 was published on 2024-05-23 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/0690327e-da60-4d71-8b3c-ac9533d82302/

Affected products (1)

cpe:2.3:a:apereo:central_authentication_service:-:*:*:*:*:wordpress:*:*

More vulnerabilities in Apereo Central Authentication Service

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CVE-2019-10754 — High (CVSS 8.1): Multiple classes used within Apereo CAS before release 6.1.0-RC5 makes use of apache commons-lang3 RandomStringUtils…
CVE-2020-27178 — High (CVSS 7.5): Apereo CAS 5.3.x before 5.3.16, 6.x before 6.1.7.2, 6.2.x before 6.2.4, and 6.3.x before 6.3.0-RC4 mishandles secret…
CVE-2015-1169 — High (CVSS 7.5): Apereo Central Authentication Service (CAS) Server before 3.5.3 allows remote attackers to conduct LDAP injection…
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CVE-2021-42567 — Medium (CVSS 6.1): Apereo CAS through 6.4.1 allows XSS via POST requests sent to the REST API endpoints.

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