Critical severity9.8NVD Advisory· Published Jun 15, 2020· Updated Jun 17, 2026

CVE-2018-21246

Description

Caddy before 0.10.13 mishandles TLS client authentication, as demonstrated by an authentication bypass caused by the lack of the StrictHostMatching mode.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
github.com/caddyserver/caddyGo	< 0.10.13	0.10.13

Affected products

Caddy Project/Caddy
cpe:2.3:a:caddyserver:caddy:*:*:*:*:*:*:*:*
Range: <0.10.3
Caddy/Caddydescription
ghsa-coords
pkg:golang/github.com/caddyserver/caddy
Range: < 0.10.13

Patches

Vulnerability mechanics

References

bugs.gentoo.org/715214nvdThird Party AdvisoryWEB
github.com/advisories/GHSA-gr7w-x2jp-3xgwghsaADVISORY
github.com/caddyserver/caddy/releases/tag/v0.10.13nvdRelease NotesThird Party AdvisoryWEB
nvd.nist.gov/vuln/detail/CVE-2018-21246ghsaADVISORY
github.com/caddyserver/caddy/commit/4d9ee000c8d2cbcdd8284007c1e0f2da7bc3c7c3ghsaWEB
github.com/caddyserver/caddy/pull/2099ghsaWEB
pkg.go.dev/vuln/GO-2020-0043ghsaWEB

News mentions

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cvss	0.637
epss	0.002
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000