How severe is CVE-2024-21495?

CVE-2024-21495 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2024-21495 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21495?

CVE-2024-21495 affects Greenpau Caddy-security. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-21495?

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

Does CVE-2024-21495 have an EU (EUVD) identifier?

Yes. CVE-2024-21495 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0610.

When was CVE-2024-21495 published?

CVE-2024-21495 was published on 2024-02-17 and last updated on 2026-06-17.

CVE-2024-21495

CVE-2024-21495 is a medium-severity vulnerability in Greenpau Caddy-security with a CVSS 3.x base score of 6.5. 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-330.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0610
Weakness: CWE-330
Affected product: Greenpau Caddy-security
Published: 2024-02-17
Last modified: 2026-06-17

Description

Versions of the package github.com/greenpau/caddy-security before 1.0.42 are vulnerable to Insecure Randomness due to using an insecure random number generation library which could possibly be predicted via a brute-force search. Attackers could use the potentially predictable nonce value used for authentication purposes in the OAuth flow to conduct OAuth replay attacks. In addition, insecure randomness is used while generating multifactor authentication (MFA) secrets and creating API keys in the database package.

Frequently asked questions

What is CVE-2024-21495?: Versions of the package github.com/greenpau/caddy-security before 1.0.42 are vulnerable to Insecure Randomness due to using an insecure random number generation library which could possibly be predicted via a brute-force search. Attackers could use the potentially predictable nonce value used for authentication purposes in the OAuth flow to conduct OAuth replay attacks. In addition, insecure randomness is used while generating multifactor authentication (MFA) secrets and creating API keys in the database package.
How severe is CVE-2024-21495?: CVE-2024-21495 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2024-21495 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21495?: CVE-2024-21495 affects Greenpau Caddy-security. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-21495?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-21495 have an EU (EUVD) identifier?: Yes. CVE-2024-21495 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0610.
When was CVE-2024-21495 published?: CVE-2024-21495 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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