{"id":"CVE-2026-56684","title":"Valkey is a distributed key-value database","summary":"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 de…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-416"],"published":"2026-08-18","updated":"2026-09-18","sourceUpdated":"2026-09-18T20:05:53.723","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-56684","references":[{"url":"https://github.com/valkey-io/valkey/commit/7cd5bcb7575d750ec2de618db80da58680a10fe3","label":"security-advisories@github.com"},{"url":"https://github.com/valkey-io/valkey/pull/4234","label":"security-advisories@github.com"},{"url":"https://github.com/valkey-io/valkey/releases/tag/7.2.14","label":"security-advisories@github.com"},{"url":"https://github.com/valkey-io/valkey/releases/tag/8.0.10","label":"security-advisories@github.com"},{"url":"https://github.com/valkey-io/valkey/releases/tag/8.1.9","label":"security-advisories@github.com"},{"url":"https://github.com/valkey-io/valkey/releases/tag/9.0.5","label":"security-advisories@github.com"},{"url":"https://github.com/valkey-io/valkey/releases/tag/9.1.1","label":"security-advisories@github.com"},{"url":"https://github.com/valkey-io/valkey/security/advisories/GHSA-53mc-f3m3-99vh","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00888,"epssPercentile":0.57543,"ingestedAt":"2026-09-18T20:51:25.628Z","slug":"CVE-2026-56684","body":"## Overview\n\nValkey 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}