CVE Explorer
CVE-2026-27585
Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, the path sanitization routine in file matcher doesn't sanitize backslashes which can lead to bypassing path related security protections. It affects users with specific Caddy and environment configurations. Version 2.11.1 fixes the issue.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"caddy","vendor":"caddyserver","versions":[{"status":"affected","version":"< 2.11.1"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:cc2e076e34cade251f08af4f691cee1acc9eb4e7dd2879029026e0bf7e0b909d · sha256:0464be52cf5c0900… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:cc2e076e34cade251f08af4f691cee1acc9eb4e7dd2879029026e0bf7e0b909d · sha256:0464be52cf5c0900… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:cc2e076e34cade251f08af4f691cee1acc9eb4e7dd2879029026e0bf7e0b909d · sha256:0464be52cf5c0900… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"name":"https://github.com/caddyserver/caddy/blob/68d50020eef0d4c3398b878f17c8092ca5b58ca0/modules/caddyhttp/fileserver/matcher.go#L361","tags":["x_refsource_MISC"],"url":"https://github.com/caddyserver/caddy/blob/68d50020eef0d4c3398b878f17c8092ca5b58ca0/modules/caddyhttp/fileserver/matcher.go#L361"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:cc2e076e34cade251f08af4f691cee1acc9eb4e7dd2879029026e0bf7e0b909d · sha256:0464be52cf5c0900… · /containers/cna/references/1
{"name":"https://github.com/caddyserver/caddy/blob/68d50020eef0d4c3398b878f17c8092ca5b58ca0/modules/caddyhttp/fileserver/matcher.go#L398","tags":["x_refsource_MISC"],"url":"https://github.com/caddyserver/caddy/blob/68d50020eef0d4c3398b878f17c8092ca5b58ca0/modules/caddyhttp/fileserver/matcher.go#L398"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:cc2e076e34cade251f08af4f691cee1acc9eb4e7dd2879029026e0bf7e0b909d · sha256:0464be52cf5c0900… · /containers/cna/references/2
{"name":"https://github.com/caddyserver/caddy/releases/tag/v2.11.1","tags":["x_refsource_MISC"],"url":"https://github.com/caddyserver/caddy/releases/tag/v2.11.1"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:cc2e076e34cade251f08af4f691cee1acc9eb4e7dd2879029026e0bf7e0b909d · sha256:0464be52cf5c0900… · /containers/cna/references/3
{"name":"https://github.com/caddyserver/caddy/security/advisories/GHSA-4xrr-hq4w-6vf4","tags":["x_refsource_CONFIRM"],"url":"https://github.com/caddyserver/caddy/security/advisories/GHSA-4xrr-hq4w-6vf4"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:cc2e076e34cade251f08af4f691cee1acc9eb4e7dd2879029026e0bf7e0b909d · sha256:0464be52cf5c0900… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.