How severe is CVE-2024-21494?

CVE-2024-21494 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2024-21494 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21494?

CVE-2024-21494 affects Greenpau Caddy-security. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-21494?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-21494 have an EU (EUVD) identifier?

Yes. CVE-2024-21494 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0735.

When was CVE-2024-21494 published?

CVE-2024-21494 was published on 2024-02-17 and last updated on 2026-06-17.

CVE-2024-21494

CVE-2024-21494 is a medium-severity vulnerability in Greenpau Caddy-security with a CVSS 3.x base score of 5.4. 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-290.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0735
Weakness: CWE-290
Affected product: Greenpau Caddy-security
Published: 2024-02-17
Last modified: 2026-06-17

Description

All versions of the package github.com/greenpau/caddy-security are vulnerable to Authentication Bypass by Spoofing via the X-Forwarded-For header due to improper input sanitization. An attacker can spoof an IP address used in the user identity module (/whoami API endpoint). This could lead to unauthorized access if the system trusts this spoofed IP address.

Frequently asked questions

What is CVE-2024-21494?: All versions of the package github.com/greenpau/caddy-security are vulnerable to Authentication Bypass by Spoofing via the X-Forwarded-For header due to improper input sanitization. An attacker can spoof an IP address used in the user identity module (/whoami API endpoint). This could lead to unauthorized access if the system trusts this spoofed IP address.
How severe is CVE-2024-21494?: CVE-2024-21494 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2024-21494 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21494?: CVE-2024-21494 affects Greenpau Caddy-security. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-21494?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-21494 have an EU (EUVD) identifier?: Yes. CVE-2024-21494 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0735.
When was CVE-2024-21494 published?: CVE-2024-21494 was published on 2024-02-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:greenpau:caddy-security:*:*:*:*:*:*:*:*

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