{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-09-29T17:01:28.334","vulnerabilities":[{"cve":{"id":"CVE-2026-26311","sourceIdentifier":"security-advisories@github.com","published":"2026-03-10T20:16:36.183","lastModified":"2026-06-17T10:26:04.180","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, a logic vulnerability in Envoy's HTTP connection manager (FilterManager) that allows for Zombie Stream Filter Execution. This issue creates a \"Use-After-Free\" (UAF) or state-corruption window where filter callbacks are invoked on an HTTP stream that has already been logically reset and cleaned up. The vulnerability resides in source/common/http/filter_manager.cc within the FilterManager::decodeData method. The ActiveStream object remains valid in memory during the deferred deletion window. If a DATA frame arrives on this stream immediately after the reset (e.g., in the same packet processing cycle), the HTTP/2 codec invokes ActiveStream::decodeData, which cascades to FilterManager::decodeData. FilterManager::decodeData fails to check the saw_downstream_reset_ flag. It iterates over the decoder_filters_ list and invokes decodeData() on filters that have already received onDestroy(). This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13."},{"lang":"es","value":"Envoy es un proxy de borde/intermedio/servicio de alto rendimiento. Antes de 1.37.1, 1.36.5, 1.35.8 y 1.34.13, una vulnerabilidad lógica en el gestor de conexiones HTTP de Envoy (FilterManager) permite la Ejecución de Filtro de Flujo Zombie. Este problema crea una ventana de 'Uso después de liberación' (UAF) o de corrupción de estado donde las devoluciones de llamada de filtro se invocan en un flujo HTTP que ya ha sido lógicamente restablecido y limpiado. La vulnerabilidad reside en source/common/http/filter_manager.cc dentro del método FilterManager::decodeData. El objeto ActiveStream permanece válido en memoria durante la ventana de eliminación diferida. Si un frame DATA llega en este flujo inmediatamente después del restablecimiento (por ejemplo, en el mismo ciclo de procesamiento de paquetes), el códec HTTP/2 invoca ActiveStream::decodeData, lo que se propaga a FilterManager::decodeData. FilterManager::decodeData no verifica el flag saw_downstream_reset_. Itera sobre la lista decoder_filters_ e invoca decodeData() en filtros que ya han recibido onDestroy(). Esta vulnerabilidad se corrige en 1.37.1, 1.36.5, 1.35.8 y 1.34.13."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"envoyproxy","product":"envoy","versions":[{"version":">= 1.37.0, < 1.37.1","status":"affected"},{"version":">= 1.36.0, < 1.36.5","status":"affected"},{"version":">= 1.35.0, < 1.35.9","status":"affected"},{"version":"< 1.34.13","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":5.9,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-03-10T19:29:44.698912Z","id":"CVE-2026-26311","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-416"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*","versionEndExcluding":"1.34.13","matchCriteriaId":"C4169052-E37B-4577-8689-4DA8D6AFF3F3"},{"vulnerable":true,"criteria":"cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*","versionStartIncluding":"1.35.0","versionEndExcluding":"1.35.8","matchCriteriaId":"35DB0A9F-BCEA-48D7-97DE-A63FA24B2032"},{"vulnerable":true,"criteria":"cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*","versionStartIncluding":"1.36.0","versionEndExcluding":"1.36.5","matchCriteriaId":"B37DDD3B-8F92-4F76-B3B1-F3743CB41339"},{"vulnerable":true,"criteria":"cpe:2.3:a:envoyproxy:envoy:1.37.0:*:*:*:*:*:*:*","matchCriteriaId":"C5266F62-E0D2-4525-90B6-65921EE14F79"}]}]}],"references":[{"url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-84xm-r438-86px","source":"security-advisories@github.com","tags":["Exploit","Mitigation","Vendor Advisory"]}]}}]}