CVE-2024-4399: The does not validate a parameter before making a request to it, which could allow unauthenticated users to p

Q: How do I fix CVE-2024-4399?

central authentication service: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2024-4399 being exploited?

CVE-2024-4399 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-4399 affect?

CVE-2024-4399 affects central authentication service. Severity is critical (CVSS 9.1). The does not validate a parameter before making a request to it, which could allow unauthenticated users to perform SSRF attack

Q: How urgent is CVE-2024-4399?

Priority 62/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.1REMOTEMITIGATE

CVE-2024-4399 is a critical-severity flaw (CVSS 9.1) affecting central authentication service. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.8% (top 21%)
CISA exploited list	No
Weakness	CWE-918
Published	2024-05-23
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: apereo

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-05-23 06:15 UTCPublished CVE record published
2026-06-17 08:01 UTCUpdated Record last modified

apereo central authentication service MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy central-authentication-service || rpm -q central-authentication-service || central-authentication-service --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: WordPress CAS Theme <= 1.0.0 - Server-Side Request Forgery

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-4399?

central authentication service: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-4399 being exploited?

CVE-2024-4399 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-4399 affect?

CVE-2024-4399 affects central authentication service. Severity is critical (CVSS 9.1). The does not validate a parameter before making a request to it, which could allow unauthenticated users to perform SSRF attack

How urgent is CVE-2024-4399?

Priority 62/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-3986 MEDIUM 4.3 DOWNGRADE A vulnerability was found in Apereo CAS 5.2.6
CVE-2025-3985 LOW 2.7 DOWNGRADE A vulnerability was found in Apereo CAS 5.2.6
CVE-2025-3984 MEDIUM 5.0 DOWNGRADE A vulnerability was found in Apereo CAS 5.2.6 and classified as critical
CVE-2024-11209 MEDIUM 6.3 DOWNGRADE A vulnerability was found in Apereo CAS 6.6
CVE-2024-11208 LOW 3.7 DOWNGRADE A vulnerability was found in Apereo CAS 6.6 and classified as problematic

References

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