{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-30T03:03:40.916","vulnerabilities":[{"cve":{"id":"CVE-2026-30852","sourceIdentifier":"security-advisories@github.com","published":"2026-03-07T17:15:52.733","lastModified":"2026-06-17T10:33:02.100","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Caddy is an extensible server platform that uses TLS by default. From version 2.7.5 to before version 2.11.2, the vars_regexp matcher in vars.go:337 double-expands user-controlled input through the Caddy replacer. When vars_regexp matches against a placeholder like {http.request.header.X-Input}, the header value gets resolved once (expected), then passed through repl.ReplaceAll() again (the bug). This means an attacker can put {env.DATABASE_URL} or {file./etc/passwd} in a request header and the server will evaluate it, leaking environment variables, file contents, and system info. This issue has been patched in version 2.11.2."},{"lang":"es","value":"Caddy es una plataforma de servidor extensible que usa TLS por defecto. Desde la versión 2.7.5 hasta antes de la versión 2.11.2, el comparador vars_regexp en vars.go:337 expande doblemente la entrada controlada por el usuario a través del reemplazador de Caddy. Cuando vars_regexp coincide con un marcador de posición como {http.request.header.X-Input}, el valor del encabezado se resuelve una vez (esperado), y luego se pasa por repl.ReplaceAll() de nuevo (el error). Esto significa que un atacante puede colocar {env.DATABASE_URL} o {file./etc /passwd} en un encabezado de solicitud y el servidor lo evaluará, filtrando variables de entorno, contenido de archivos e información del sistema. Este problema ha sido parcheado en la versión 2.11.2."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"caddyserver","product":"caddy","versions":[{"version":">= 2.7.5, < 2.11.2","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-03-09T18:19:34.437219Z","id":"CVE-2026-30852","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-74"},{"lang":"en","value":"CWE-200"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:caddyserver:caddy:*:*:*:*:*:*:*:*","versionStartIncluding":"2.7.5","versionEndExcluding":"2.11.2","matchCriteriaId":"A3772146-497E-4F88-B309-90C277081DE9"}]}]}],"references":[{"url":"https://github.com/caddyserver/caddy/pull/5408","source":"security-advisories@github.com","tags":["Issue Tracking","Patch"]},{"url":"https://github.com/caddyserver/caddy/releases/tag/v2.11.2","source":"security-advisories@github.com","tags":["Product","Release Notes"]},{"url":"https://github.com/caddyserver/caddy/security/advisories/GHSA-m2w3-8f23-hxxf","source":"security-advisories@github.com","tags":["Exploit","Mitigation","Vendor Advisory"]}]}}]}