CVE-2019-14243
CVSS v3
7.5
HIGH
EPSS Score
4.3 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
headerv2.go in mastercactapus proxyprotocol before 0.0.2, as used in the mastercactapus caddy-proxyprotocol plugin through 0.0.2 for Caddy, allows remote attackers to cause a denial of service (webserver panic and daemon crash) via a crafted HAProxy PROXY v2 request with truncated source/destination address data.
Technical details
- Published
- 2019-07-23
Frequently asked questions
What is CVE-2019-14243?
headerv2.go in mastercactapus proxyprotocol before 0.0.2, as used in the mastercactapus caddy-proxyprotocol plugin through 0.0.2 for Caddy, allows remote attackers to cause a denial of service (webserver panic and daemon crash) via a crafted HAProxy PROXY v2 request with truncated source/destination address data.
Is CVE-2019-14243 actively exploited?
Active exploitation of CVE-2019-14243 has not been confirmed. Its EPSS score was 4.3% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2019-14243?
CVE-2019-14243 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2019-14243 affecting your environment?
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