How severe is CVE-2024-21493?

CVE-2024-21493 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2024-21493 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21493?

CVE-2024-21493 affects Greenpau Caddy-security. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-21493?

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

Does CVE-2024-21493 have an EU (EUVD) identifier?

Yes. CVE-2024-21493 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0575.

When was CVE-2024-21493 published?

CVE-2024-21493 was published on 2024-02-17 and last updated on 2026-06-17.

CVE-2024-21493

CVE-2024-21493 is a medium-severity vulnerability in Greenpau Caddy-security with a CVSS 3.x base score of 5.3. 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-129.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0575
Weakness: CWE-129
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 Improper Validation of Array Index when parsing a Caddyfile. Multiple parsing functions in the affected library do not validate whether their input values are nil before attempting to access elements, which can lead to a panic (index out of range). Panics during the parsing of a configuration file may introduce ambiguity and vulnerabilities, hindering the correct interpretation and configuration of the web server.

Frequently asked questions

What is CVE-2024-21493?: All versions of the package github.com/greenpau/caddy-security are vulnerable to Improper Validation of Array Index when parsing a Caddyfile. Multiple parsing functions in the affected library do not validate whether their input values are nil before attempting to access elements, which can lead to a panic (index out of range). Panics during the parsing of a configuration file may introduce ambiguity and vulnerabilities, hindering the correct interpretation and configuration of the web server.
How severe is CVE-2024-21493?: CVE-2024-21493 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2024-21493 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21493?: CVE-2024-21493 affects Greenpau Caddy-security. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-21493?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-21493 have an EU (EUVD) identifier?: Yes. CVE-2024-21493 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0575.
When was CVE-2024-21493 published?: CVE-2024-21493 was published on 2024-02-17 and last updated on 2026-06-17.

References

Affected products (1)

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

More vulnerabilities in Greenpau Caddy-security

CVE-2024-21495 — Medium (CVSS 6.5): Versions of the package github.com/greenpau/caddy-security before 1.0.42 are vulnerable to Insecure Randomness due to…
CVE-2024-21497 — Medium (CVSS 5.4): Versions of the package github.com/greenpau/caddy-security are vulnerable to Open Redirect via the redirect_url…
CVE-2024-21494 — Medium (CVSS 5.4): All versions of the package github.com/greenpau/caddy-security are vulnerable to Authentication Bypass by Spoofing via…
CVE-2024-21499 — Medium (CVSS 4.3): All versions of the package github.com/greenpau/caddy-security are vulnerable to HTTP Header Injection via the…

All CVEs affecting Greenpau Caddy-security →

Other CWE-129 (Improper Validation of Array Index) vulnerabilities

CVE-2020-27485 — Critical (CVSS 9.9): Garmin Forerunner 235 before 8.20 is affected by: Array index error. The component is: ConnectIQ TVM. The attack vector…
CVE-2020-27483 — Critical (CVSS 9.9): Garmin Forerunner 235 before 8.20 is affected by: Array index error. The component is: ConnectIQ TVM. The attack vector…
CVE-2026-21413 — Critical (CVSS 9.8): A heap-based buffer overflow vulnerability exists in the lossless_jpeg_load_raw functionality of LibRaw Commit 0b56545…
CVE-2025-27034 — Critical (CVSS 9.8): Memory corruption while selecting the PLMN from SOR failed list.
CVE-2025-3357 — Critical (CVSS 9.8): IBM Tivoli Monitoring 6.3.0.7 through 6.3.0.7 Service Pack 19 could allow a remote attacker to execute arbitrary code…
CVE-2024-45569 — Critical (CVSS 9.8): Memory corruption while parsing the ML IE due to invalid frame content.

Browse all CWE-129 (Improper Validation of Array Index) vulnerabilities →