CVE-2026-49214

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{"affected": [{"affectedData": [{"product": "psr7", "vendor": "guzzle", "versions": [{"status": "affected", "version": "< 2.10.2"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:guzzlephp:psr-7:*:*:*:*:*:*:*:*", "matchCriteriaId": "5190DD04-7580-4B6E-BA5A-6B89E0A95A05", "versionEndExcluding": "2.10.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Versions prior to 2.10.2 did not reject ASCII control characters, whitespace, or DEL in first-party URI host components. A vulnerable flow is: First, an application accepts a user-controlled URL. Second, the URL is used to construct a PSR-7 `Uri` or `Request`. Third, the host component contains CRLF or another header-unsafe character. Fourth, the host is copied into the PSR-7 `Host` header when no explicit `Host` header is provided. Finally, the request is serialized or sent by an HTTP client that does not independently reject the malformed host. In that flow, an attacker can cause the serialized request to contain additional attacker-controlled header lines. For example, a host containing `\"\\r\\nX-Injected: yes\"` can cause the generated `Host` header to span multiple HTTP header lines. Applications are affected when they use user-controlled URLs for outbound HTTP requests, URL forwarding, proxying, crawling, webhook delivery, or similar request-dispatch flows. In deployments involving HTTP/1.1 connection reuse, proxies, gateways, or load balancers, this malformed request may also contribute to request smuggling or cache poisoning, depending on how downstream components parse the request. The issue is patched in `2.10.2` and later. `1.x` is end-of-life and will not receive a patch. As a workaround, validate and reject all untrusted URI strings before constructing PSR-7 `Uri` or `Request` instances. Reject input containing ASCII control characters, whitespace, or DEL, including CRLF, tab, space, NUL, or DEL characters. Applications that forward requests should also ensure the final HTTP client or serializer rejects invalid URI and header data before writing requests to the network."}, {"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 no rechazaban caracteres de control ASCII, espacios en blanco o DEL en los componentes de host URI de origen. Un flujo vulnerable es: Primero, una aplicaci\u00f3n acepta una URL controlada por el usuario. Segundo, la URL se utiliza para construir un \u2019Uri\u2019 o \u2019Request\u2019 PSR-7. Tercero, el componente de host contiene CRLF u otro car\u00e1cter inseguro para encabezados. Cuarto, el host se copia en el encabezado \u2019Host\u2019 PSR-7 cuando no se proporciona un encabezado \u2019Host\u2019 expl\u00edcito. Finalmente, la solicitud es serializada o enviada por un cliente HTTP que no rechaza de forma independiente el host malformado. En ese flujo, un atacante puede hacer que la solicitud serializada contenga l\u00edneas de encabezado adicionales controladas por el atacante. Por ejemplo, un host que contenga \u2019\u2019\\r\\nX-Injected: yes\u2019\u2019 puede hacer que el encabezado \u2019Host\u2019 generado abarque m\u00faltiples l\u00edneas de encabezado HTTP. Las aplicaciones se ven afectadas cuando utilizan URLs controladas por el usuario para solicitudes HTTP salientes, reenv\u00edo de URLs, proxying, rastreo, entrega de webhooks o flujos de despacho de solicitudes similares. En implementaciones que involucran la reutilizaci\u00f3n de conexiones HTTP/1.1, proxies, gateways o balanceadores de carga, esta solicitud malformada tambi\u00e9n puede contribuir al contrabando de solicitudes o al envenenamiento de cach\u00e9, dependiendo de c\u00f3mo los componentes posteriores analicen la solicitud. El problema est\u00e1 parcheado en la \u20192.10.2\u2019 y versiones posteriores. \u20191.x\u2019 ha llegado al fin de su vida \u00fatil y no recibir\u00e1 un parche. Como soluci\u00f3n alternativa, valide y rechace todas las cadenas URI no confiables antes de construir instancias de \u2019Uri\u2019 o \u2019Request\u2019 PSR-7. Rechace la entrada que contenga caracteres de control ASCII, espacios en blanco o DEL, incluyendo caracteres CRLF, tab, espacio, NUL o DEL. Las aplicaciones que reenv\u00edan solicitudes tambi\u00e9n deben asegurarse de que el cliente HTTP o serializador final rechace los datos URI y de encabezado no v\u00e1lidos antes de escribir las solicitudes en la red."}], "id": "CVE-2026-49214", "lastModified": "2026-10-25T23:10:00.167", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-49214", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-11T12:47:38.984022Z", "version": "2.0.3"}}]}, "published": "2026-06-11T13:16:33.300", "references": [{"source": "security-advisories@github.com", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://github.com/guzzle/psr7/security/advisories/GHSA-hq7v-mx3g-29hw"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-93"}, {"lang": "en", "value": "CWE-113"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.10.2)"}}], "enrichment": {"confidence": 85.0, "confidence_source": "matching", "scores": [{"score": 85.0, "source": "matching"}]}, "original": {"product": "psr7", "source": "cna", "vendor": "guzzle"}, "product": "psr-7", "vendor": "guzzlephp"}], "created": "2026-06-11T13:30:15.069413+00:00", "updated": "2026-06-11T16:13:50.534523+00:00", "vendors": ["guzzlephp", "guzzlephp$PRODUCT$psr-7"]}