{"id":"BIT-valkey-2026-56684","summary":"Valkey: TLS pending-data processing use-after-free may allow remote code execution","details":"Valkey is a distributed key-value database. Prior to 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1, Valkey's tlsProcessPendingData function iterates pending_list while an authenticated client can trigger CLIENT KILL, causing connTLSClose to delete the iterator's cached next node and producing a use-after-free that can crash the server or potentially allow remote code execution when TLS is enabled. This issue is fixed in versions 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1.","aliases":["CVE-2026-56684","GHSA-53mc-f3m3-99vh"],"modified":"2026-08-24T08:26:14.270843465Z","published":"2026-08-24T05:53:58.352Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:valkey-io:valkey:*:*:*:*:*:*:*:*"]},"references":[{"type":"WEB","url":"https://github.com/valkey-io/valkey/commit/7cd5bcb7575d750ec2de618db80da58680a10fe3"},{"type":"WEB","url":"https://github.com/valkey-io/valkey/pull/4234"},{"type":"WEB","url":"https://github.com/valkey-io/valkey/releases/tag/7.2.14"},{"type":"WEB","url":"https://github.com/valkey-io/valkey/releases/tag/8.0.10"},{"type":"WEB","url":"https://github.com/valkey-io/valkey/releases/tag/8.1.9"},{"type":"WEB","url":"https://github.com/valkey-io/valkey/releases/tag/9.0.5"},{"type":"WEB","url":"https://github.com/valkey-io/valkey/releases/tag/9.1.1"},{"type":"WEB","url":"https://github.com/valkey-io/valkey/security/advisories/GHSA-53mc-f3m3-99vh"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56684"}],"affected":[{"package":{"name":"valkey","ecosystem":"Bitnami","purl":"pkg:bitnami/valkey"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"7.2.14"},{"introduced":"8.0.0"},{"fixed":"8.0.10"},{"introduced":"8.1.0"},{"fixed":"8.1.9"},{"introduced":"9.0.0"},{"fixed":"9.0.5"},{"introduced":"9.1.0"},{"fixed":"9.1.1"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/valkey/BIT-valkey-2026-56684.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}],"schema_version":"1.9.0"}