High 8.8Published Aug 18, 2026

CVE-2026-63639Valkey: UAF in stream deserialization may lead to remote code execution

Updated under an hour ago (Oct 29, 2026, 3:30 AM ET)

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It affects valkey-io valkey. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for valkey-io valkey

Exploited in the last 30 days

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 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.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-416
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Aug 20, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

valkey-io valkey valkey_io:valkey (from the name)	before 7.2.14; from 8.0.0, < 8.0.10; from 8.1.0, < 8.1.9; from 9.0.0, < 9.0.5; from 9.1.0, < 9.1.1	CNA record

References

References

https://github.com/valkey-io/valkey/security/advisories/GHSA-mvcj-73cw-22m4	x-refsource-confirm
https://github.com/valkey-io/valkey/pull/4073	x-refsource-misc
https://github.com/valkey-io/valkey/commit/06bc7768fe609f2054e69ccedefe7628f5675da9	x-refsource-misc
https://github.com/valkey-io/valkey/commit/509cb3c74e8cbc9c0498ebe8b6c93dcd605e7271	x-refsource-misc
https://github.com/valkey-io/valkey/commit/98465eaffe3f95524a5046318bfbc4bdb9798291	x-refsource-misc
https://github.com/valkey-io/valkey/commit/e95911d4d65be8789fa3705f44d7ed1e65378445	x-refsource-misc
https://github.com/valkey-io/valkey/commit/f8d2027e8d4df790ac04974bf606408c8ea62778	x-refsource-misc
https://github.com/valkey-io/valkey/releases/tag/7.2.14	x-refsource-misc
https://github.com/valkey-io/valkey/releases/tag/8.0.10	x-refsource-misc
https://github.com/valkey-io/valkey/releases/tag/8.1.9	x-refsource-misc
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.