{"id":"BIT-redis-2026-23479","summary":"redis-server use-after-free in unblock client flow may allow remote code execution","details":"Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client flow does not handle an error return from `processCommandAndResetClient` when re-executing a blocked command. If a blocked client is evicted during this flow, an authenticated attacker can trigger a use-after-free that may lead to remote code execution. This has been patched in version 8.6.3.","aliases":["BIT-keydb-2026-23479","BIT-valkey-2026-23479","CVE-2026-23479"],"modified":"2026-05-07T12:26:21.037404978Z","published":"2026-05-07T08:53:05.164Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*"]},"references":[{"type":"WEB","url":"https://github.com/redis/redis/releases/tag/8.6.3"},{"type":"WEB","url":"https://github.com/redis/redis/security/advisories/GHSA-93m2-935m-8rj3"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23479"}],"affected":[{"package":{"name":"redis","ecosystem":"Bitnami","purl":"pkg:bitnami/redis"},"ranges":[{"type":"SEMVER","events":[{"introduced":"7.2.0"},{"fixed":"7.2.14"},{"introduced":"7.3.0"},{"fixed":"7.4.9"},{"introduced":"8.0.0"},{"fixed":"8.2.6"},{"introduced":"8.3.0"},{"fixed":"8.4.3"},{"introduced":"8.5.0"},{"fixed":"8.6.3"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/redis/BIT-redis-2026-23479.json"},"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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"}]}],"schema_version":"1.7.5"}