> CVE-2026-63639 [HIGH]

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PUBLISHED
2026-08-18 15:16
MODIFIED
2026-08-18 15:16
CVSS_SCORE V3
8.8
EPSS (Prob. Exploit)
1.17%
Top 33.1%
DATA SOURCES:
NVD đź”— 2026-08-18 CWE MITRE đź”— 2026-09-01 FIRST EPSS đź”— 2026-10-18 OSV đź”— 2026-10-26 MSRC đź”— 2026-09-01

> DESCRIPTION

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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EXPLOITABILITY
2.8
IMPACT
5.9

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-416

> CWE DETAILED DESCRIPTIONS

CWE-416: Use After Free - The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: valkey security, bug fix, and enhancement update
An update for valkey is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (C...
Red Hat Security Advisory: valkey security, bug fix, and enhancement update
An update for valkey is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (...
Red Hat Security Advisory: valkey security update
An update for valkey is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vuln...

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Valkey: UAF in stream deserialization may lead to remote code execution

AFFECTED PACKAGES:
Unknown / Unknown
37 versions affected
ALIASES:
BIT-valkey-2026-63639, GHSA-mvcj-73cw-22m4

> HISTORIQUE DES MODIFICATIONS

Première apparition
18/08/2026 15:16
Source: NVD
📊 ENRICHISSEMENT 01/09/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-416: Use After Free - The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original p...
Total des modifications: 1 Dernière mise à jour: 1 month ago

> REFERENCES

https://github.com/valkey-io/valkey/commit/06bc7768fe609f2054e69ccedefe7628f5675...
https://github.com/valkey-io/valkey/commit/509cb3c74e8cbc9c0498ebe8b6c93dcd605e7...
https://github.com/valkey-io/valkey/commit/98465eaffe3f95524a5046318bfbc4bdb9798...
https://github.com/valkey-io/valkey/commit/e95911d4d65be8789fa3705f44d7ed1e65378...
https://github.com/valkey-io/valkey/commit/f8d2027e8d4df790ac04974bf606408c8ea62...
https://github.com/valkey-io/valkey/pull/4073
https://github.com/valkey-io/valkey/releases/tag/7.2.14
https://github.com/valkey-io/valkey/releases/tag/8.0.10
https://github.com/valkey-io/valkey/releases/tag/8.1.9
https://github.com/valkey-io/valkey/releases/tag/9.0.5
https://github.com/valkey-io/valkey/releases/tag/9.1.1
https://github.com/valkey-io/valkey/security/advisories/GHSA-mvcj-73cw-22m4
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