{"id":"CVE-2026-63639","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 RESTORE command accepts a malformed RDB stream payload that assigns one Pending Entry List NACK to multiple consumers during stream co…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/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-2026-63639","references":[{"url":"https://github.com/valkey-io/valkey/commit/06bc7768fe609f2054e69ccedefe7628f5675da9","label":"security-advisories@github.com"},{"url":"https://github.com/valkey-io/valkey/commit/509cb3c74e8cbc9c0498ebe8b6c93dcd605e7271","label":"security-advisories@github.com"},{"url":"https://github.com/valkey-io/valkey/commit/98465eaffe3f95524a5046318bfbc4bdb9798291","label":"security-advisories@github.com"},{"url":"https://github.com/valkey-io/valkey/commit/e95911d4d65be8789fa3705f44d7ed1e65378445","label":"security-advisories@github.com"},{"url":"https://github.com/valkey-io/valkey/commit/f8d2027e8d4df790ac04974bf606408c8ea62778","label":"security-advisories@github.com"},{"url":"https://github.com/valkey-io/valkey/pull/4073","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-mvcj-73cw-22m4","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.0117,"epssPercentile":0.66013,"ingestedAt":"2026-09-18T20:51:25.629Z","slug":"CVE-2026-63639","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 RESTORE command accepts a malformed RDB stream payload that assigns one Pending Entry List NACK to multiple consumers during stream consumer-group deserialization, causing a use-after-free when one consumer is deleted while another still references the shared NACK and potentially allowing remote code execution. 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":49,"depthScoreParts":{"impact":48.4,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}