CVE-2026-48998

{"id": "CVE-2026-48998", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-48998", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-11T16:05:39.189615Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "guzzle", "product": "psr7", "versions": [{"status": "affected", "version": "< 2.10.2"}]}]}], "published": "2026-06-11T13:16:33.133", "references": [{"url": "https://github.com/guzzle/psr7/security/advisories/GHSA-34xg-wgjx-8xph", "tags": ["Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-918"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-918"}]}], "descriptions": [{"lang": "en", "value": "guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Versions prior to 2.10.2 contain improper Host header validation when parsing raw HTTP request messages and when deriving a server request URI from server variables. An attacker can provide a malformed Host header containing URI authority delimiters, such as `trusted.example@evil.example`. When the Host value is used to construct a URI, the malformed value can be reinterpreted as URI userinfo and host. This can cause the PSR-7 request URI host to differ from the original Host header value. Applications are affected if they parse attacker-controlled raw HTTP requests with `GuzzleHttp\\Psr7\\Message::parseRequest()` or the legacy 1.x `GuzzleHttp\\Psr7\\parse_request()` function, or if they build server requests from attacker-controlled server variables, then rely on the resulting URI host for routing, allow-list checks, or forwarding decisions. In affected forwarding or gateway scenarios, this may cause requests or credentials to be sent to an unintended host. The issue is patched in `2.10.2`. `1.x` is end-of-life and will not receive a patch. Some workarounds are available. Validate the `Host` header as `uri-host [ \":\" port ]` before calling `Message::parseRequest()` or legacy `parse_request()` on untrusted HTTP request data, or before deriving routing and forwarding decisions from a parsed request URI. Reject Host values containing userinfo, path, query, or fragment delimiters."}, {"lang": "es", "value": "guzzlehttp/psr7 es una implementaci\u00f3n de la biblioteca de mensajes HTTP PSR-7 en PHP. Las versiones anteriores a la 2.10.2 contienen una validaci\u00f3n incorrecta del encabezado Host al analizar mensajes de solicitud HTTP sin procesar y al derivar una URI de solicitud del servidor a partir de variables del servidor. Un atacante puede proporcionar un encabezado Host malformado que contenga delimitadores de autoridad de URI, como \u2019trusted.example@evil.example\u2019. Cuando el valor de Host se utiliza para construir una URI, el valor malformado puede ser reinterpretado como informaci\u00f3n de usuario y host de la URI. Esto puede hacer que el host de la URI de solicitud PSR-7 difiera del valor original del encabezado Host. Las aplicaciones se ven afectadas si analizan solicitudes HTTP sin procesar controladas por un atacante con \u2019GuzzleHttp\\Psr7\\Message::parseRequest()\u2019 o la funci\u00f3n heredada 1.x \u2019GuzzleHttp\\Psr7\\parse_request()\u2019, o si construyen solicitudes de servidor a partir de variables de servidor controladas por un atacante, y luego dependen del host de la URI resultante para el enrutamiento, las comprobaciones de lista de permitidos o las decisiones de reenv\u00edo. En escenarios de reenv\u00edo o de pasarela afectados, esto puede hacer que las solicitudes o credenciales se env\u00eden a un host no deseado. El problema est\u00e1 parcheado en \u20192.10.2\u2019. \u20191.x\u2019 ha llegado al fin de su vida \u00fatil y no recibir\u00e1 un parche. Algunas soluciones alternativas est\u00e1n disponibles. Valide el encabezado \u2019Host\u2019 como \u2019uri-host [ \u2019:\u2019 puerto ]\u2019 antes de llamar a \u2019Message::parseRequest()\u2019 o a la funci\u00f3n heredada \u2019parse_request()\u2019 en datos de solicitud HTTP no confiables, o antes de derivar decisiones de enrutamiento y reenv\u00edo de una URI de solicitud analizada. Rechace los valores de Host que contengan delimitadores de informaci\u00f3n de usuario, ruta, consulta o fragmento."}], "lastModified": "2026-10-26T11:10:00.157", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:guzzlephp:psr-7:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5190DD04-7580-4B6E-BA5A-6B89E0A95A05", "versionEndExcluding": "2.10.2"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}