Vulnerability-Lookup

CVE-2026-56684 (GCVE-0-2026-56684)

Vulnerability from cvelistv5 – Published: 2026-08-18 14:19 – Updated: 2026-08-19 03:56

Title

Valkey: TLS pending-data processing use-after-free may allow remote code execution

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 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.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-18 00:00 UTC

CWE

CWE-416 - Use After Free

Assigner

GitHub_M mitre root

References

8 references

URL	Tags
https://github.com/valkey-io/valkey/security/advi…	x_refsource_CONFIRM
https://github.com/valkey-io/valkey/pull/4234	x_refsource_MISC
https://github.com/valkey-io/valkey/commit/7cd5bc…	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
https://github.com/valkey-io/valkey/releases/tag/9.0.5	x_refsource_MISC
https://github.com/valkey-io/valkey/releases/tag/9.1.1	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
valkey-io	valkey	Affected: < 7.2.14 Affected: >= 8.0.0, < 8.0.10 Affected: >= 8.1.0, < 8.1.9 Affected: >= 9.0.0, < 9.0.5 Affected: >= 9.1.0, < 9.1.1	guessed

Show details on NVD website

JSON

To clipboard

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alsa-2026:64796

Vulnerability from osv_almalinux

Published

2026-09-08 00:00

Modified

2026-09-10 09:04

Summary

Important: valkey security, bug fix, and enhancement update

Details

Valkey is an advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets. You can run atomic operations on these types, like appending to a string; incrementing the value in a hash; pushing to a list; computing set intersection, union and difference; or getting the member with highest ranking in a sorted set. In order to achieve its outstanding performance, Valkey works with an in-memory dataset. Depending on your use case, you can persist it either by dumping the dataset to disk every once in a while, or by appending each command to a log. Valkey also supports trivial-to-setup master-slave replication, with very fast non-blocking first synchronization, auto-reconnection on net split and so forth. Other features include Transactions, Pub/Sub, Lua scripting, Keys with a limited time-to-live, and configuration settings to make Valkey behave like a cache. You can use Valkey from most programming languages also.

Security Fix(es):

redis: Redis: Remote Code Execution via specially crafted RESTORE payload (CVE-2026-66373)
valkey: Valkey: Remote code execution via use-after-free in stream deserialization (CVE-2026-63639)
valkey: Valkey: Remote code execution via TLS pending-data processing use-after-free (CVE-2026-56684)

Bug Fix(es) and Enhancement(s):

[Tracker] Rebase valkey to 8.0.10 (JIRA:AlmaLinux-216776)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2026:64796	ADVISORY
	https://access.redhat.com/security/cve/CVE-2026-56684	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63639	REPORT
	https://access.redhat.com/security/cve/CVE-2026-66373	REPORT
	https://bugzilla.redhat.com/2506985	REPORT
	https://bugzilla.redhat.com/2517906	REPORT
	https://bugzilla.redhat.com/2517907	REPORT
	https://errata.almalinux.org/10/ALSA-2026-64796.html	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "valkey"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.0.11-1.el10_2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "valkey-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.0.11-1.el10_2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "Valkey is an advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets. You can run atomic operations on these types, like appending to a string; incrementing the value in a hash; pushing to a list; computing set intersection, union and difference; or getting the member with highest ranking in a sorted set. In order to achieve its outstanding performance, Valkey works with an in-memory dataset. Depending on your use case, you can persist it either by dumping the dataset to disk every once in a while, or by appending each command to a log. Valkey also supports trivial-to-setup master-slave replication, with very fast non-blocking first synchronization, auto-reconnection on net split and so forth. Other features include Transactions, Pub/Sub, Lua scripting, Keys with a limited time-to-live, and configuration settings to make Valkey behave like a cache. You can use Valkey from most programming languages also.  \n\nSecurity Fix(es):  \n\n  * redis: Redis: Remote Code Execution via specially crafted RESTORE payload (CVE-2026-66373)\n  * valkey: Valkey: Remote code execution via use-after-free in stream deserialization (CVE-2026-63639)\n  * valkey: Valkey: Remote code execution via TLS pending-data processing use-after-free (CVE-2026-56684)\n\n\nBug Fix(es) and Enhancement(s):  \n\n  * [Tracker] Rebase valkey to 8.0.10 (JIRA:AlmaLinux-216776)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:64796",
  "modified": "2026-09-10T09:04:00Z",
  "published": "2026-09-08T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:64796"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-56684"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63639"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-66373"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2506985"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2517906"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2517907"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/10/ALSA-2026-64796.html"
    }
  ],
  "related": [
    "CVE-2026-66373",
    "CVE-2026-63639",
    "CVE-2026-56684"
  ],
  "summary": "Important: valkey security, bug fix, and enhancement update"
}

alsa-2026:64807

Vulnerability from osv_almalinux

Published

2026-09-08 00:00

Modified

2026-09-09 07:46

Summary

Important: valkey security, bug fix, and enhancement update

Details

Security Fix(es):

redis: Redis: Remote Code Execution via specially crafted RESTORE payload (CVE-2026-66373)
valkey: Valkey: Remote code execution via use-after-free in stream deserialization (CVE-2026-63639)
valkey: Valkey: Remote code execution via TLS pending-data processing use-after-free (CVE-2026-56684)

Bug Fix(es) and Enhancement(s):

[Tracker] Rebase valkey to 8.0.10 (JIRA:AlmaLinux-216778)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2026:64807	ADVISORY
	https://access.redhat.com/security/cve/CVE-2026-56684	REPORT
	https://access.redhat.com/security/cve/CVE-2026-63639	REPORT
	https://access.redhat.com/security/cve/CVE-2026-66373	REPORT
	https://bugzilla.redhat.com/2506985	REPORT
	https://bugzilla.redhat.com/2517906	REPORT
	https://bugzilla.redhat.com/2517907	REPORT
	https://errata.almalinux.org/9/ALSA-2026-64807.html	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "valkey"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.0.10-1.el9_8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "valkey-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.0.10-1.el9_8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "Valkey is an advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets. You can run atomic operations on these types, like appending to a string; incrementing the value in a hash; pushing to a list; computing set intersection, union and difference; or getting the member with highest ranking in a sorted set. In order to achieve its outstanding performance, Valkey works with an in-memory dataset. Depending on your use case, you can persist it either by dumping the dataset to disk every once in a while, or by appending each command to a log. Valkey also supports trivial-to-setup master-slave replication, with very fast non-blocking first synchronization, auto-reconnection on net split and so forth. Other features include Transactions, Pub/Sub, Lua scripting, Keys with a limited time-to-live, and configuration settings to make Valkey behave like a cache. You can use Valkey from most programming languages also.  \n\nSecurity Fix(es):  \n\n  * redis: Redis: Remote Code Execution via specially crafted RESTORE payload (CVE-2026-66373)\n  * valkey: Valkey: Remote code execution via use-after-free in stream deserialization (CVE-2026-63639)\n  * valkey: Valkey: Remote code execution via TLS pending-data processing use-after-free (CVE-2026-56684)\n\n\nBug Fix(es) and Enhancement(s):  \n\n  * [Tracker] Rebase valkey to 8.0.10 (JIRA:AlmaLinux-216778)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:64807",
  "modified": "2026-09-09T07:46:29Z",
  "published": "2026-09-08T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:64807"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-56684"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63639"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-66373"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2506985"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2517906"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2517907"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/9/ALSA-2026-64807.html"
    }
  ],
  "related": [
    "CVE-2026-66373",
    "CVE-2026-63639",
    "CVE-2026-56684"
  ],
  "summary": "Important: valkey security, bug fix, and enhancement update"
}

bit-valkey-2026-56684

Vulnerability from bitnami_vulndb

Published

2026-08-24 05:53

Modified

2026-08-24 06:09

Summary

Valkey: TLS pending-data processing use-after-free may allow remote code execution

Details

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "valkey",
        "purl": "pkg:bitnami/valkey"
      },
      "ranges": [
        {
          "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"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-56684"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:valkey-io:valkey:*:*:*:*:*:*:*:*"
    ],
    "severity": "High"
  },
  "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\u0027s tlsProcessPendingData function iterates pending_list while an authenticated client can trigger CLIENT KILL, causing connTLSClose to delete the iterator\u0027s 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.",
  "id": "BIT-valkey-2026-56684",
  "modified": "2026-08-24T06:09:24.796Z",
  "published": "2026-08-24T05:53:58.352Z",
  "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"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Valkey: TLS pending-data processing use-after-free may allow remote code execution"
}

FKIE_CVE-2026-56684

Vulnerability from fkie_nvd - Published: 2026-08-18 15:16 - Updated: 2026-08-19 04:17

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/valkey-io/valkey/commit/7cd5bcb7575d750ec2de618db80da58680a10fe3
	security-advisories@github.com	https://github.com/valkey-io/valkey/pull/4234
	security-advisories@github.com	https://github.com/valkey-io/valkey/releases/tag/7.2.14
	security-advisories@github.com	https://github.com/valkey-io/valkey/releases/tag/8.0.10
	security-advisories@github.com	https://github.com/valkey-io/valkey/releases/tag/8.1.9
	security-advisories@github.com	https://github.com/valkey-io/valkey/releases/tag/9.0.5
	security-advisories@github.com	https://github.com/valkey-io/valkey/releases/tag/9.1.1
	security-advisories@github.com	https://github.com/valkey-io/valkey/security/advisories/GHSA-53mc-f3m3-99vh

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "valkey",
          "vendor": "valkey-io",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 7.2.14"
            },
            {
              "status": "affected",
              "version": "\u003e= 8.0.0, \u003c 8.0.10"
            },
            {
              "status": "affected",
              "version": "\u003e= 8.1.0, \u003c 8.1.9"
            },
            {
              "status": "affected",
              "version": "\u003e= 9.0.0, \u003c 9.0.5"
            },
            {
              "status": "affected",
              "version": "\u003e= 9.1.0, \u003c 9.1.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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\u0027s tlsProcessPendingData function iterates pending_list while an authenticated client can trigger CLIENT KILL, causing connTLSClose to delete the iterator\u0027s 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."
    }
  ],
  "id": "CVE-2026-56684",
  "lastModified": "2026-08-19T04:17:24.760",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 5.9,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-56684",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-18T00:00:00+00:00",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-18T15:16:55.463",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/valkey-io/valkey/commit/7cd5bcb7575d750ec2de618db80da58680a10fe3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/valkey-io/valkey/pull/4234"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/valkey-io/valkey/releases/tag/7.2.14"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/valkey-io/valkey/releases/tag/8.0.10"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/valkey-io/valkey/releases/tag/8.1.9"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/valkey-io/valkey/releases/tag/9.0.5"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/valkey-io/valkey/releases/tag/9.1.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/valkey-io/valkey/security/advisories/GHSA-53mc-f3m3-99vh"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

RHSA-2026:61884

Vulnerability from csaf_redhat - Published: 2026-09-01 05:42 - Updated: 2026-09-08 23:07

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2026-56684.

CVE-2026-56684

A flaw was found in Valkey. An authenticated client can trigger a `CLIENT KILL` command while the `tlsProcessPendingData` function iterates a pending list. This action causes `connTLSClose` to delete the iterator's cached next node, leading to a use-after-free vulnerability. This flaw, when Transport Layer Security (TLS) is enabled, may result in a server crash or potentially allow a remote attacker to achieve arbitrary code execution.

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Fixed: 4 products

https://access.redhat.com/errata/RHSA-2026:61884

Open the full advisory

RHSA-2026:64796

Vulnerability from csaf_redhat - Published: 2026-09-08 05:14 - Updated: 2026-09-14 23:48

Summary

Red Hat Security Advisory: valkey security, bug fix, and enhancement update

Severity

Important

Scope

3 vulnerabilities in this advisory, including CVE-2026-56684.

CVE-2026-56684

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Fixed: 17 products

https://access.redhat.com/errata/RHSA-2026:64796

Open the full advisory

RHSA-2026:64807

Vulnerability from csaf_opensuse - Published: 2026-09-08 00:00 - Updated: 2026-09-15 07:36

Summary

security update for valkey

Severity

Important

Scope

3 vulnerabilities in this advisory, including CVE-2026-56684.

CVE-2026-56684

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Recommended: 2 products

Open the full advisory

rlsa-2026:64796

Vulnerability from osv_rocky

Published

2026-09-09 12:09

Modified

2026-09-16 12:13

Summary

Important: valkey security, bug fix, and enhancement update

Details

Security Fix(es):

redis: Redis: Remote Code Execution via specially crafted RESTORE payload (CVE-2026-66373)
valkey: Valkey: Remote code execution via use-after-free in stream deserialization (CVE-2026-63639)
valkey: Valkey: Remote code execution via TLS pending-data processing use-after-free (CVE-2026-56684)

Bug Fix(es) and Enhancement(s):

[Tracker] Rebase valkey to 8.0.10 (JIRA:Rocky Linux-216776)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Severity

8.8 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Credits

Rocky Enterprise Software Foundation

Red Hat

References

URL

Type

	https://errata.rockylinux.org/RLSA-2026:64796	ADVISORY
	https://bugzilla.redhat.com/show_bug.cgi?id=2517906	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2506985	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517907	REPORT
	https://access.redhat.com/errata/RHSA-2026:64796	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:10",
        "name": "valkey",
        "purl": "pkg:rpm/rocky-linux/valkey?distro=rocky-linux-10\u0026epoch=0"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "AppStream"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0:8.0.11-1.el10_2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "database_specific": {
    "license": "CC-BY-4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory": "RHSA-2026:64796"
  },
  "details": "Valkey is an advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets.  You can run atomic operations on these types, like appending to a string; incrementing the value in a hash; pushing to a list; computing set intersection, union and difference; or getting the member with highest ranking in a sorted set.  In order to achieve its outstanding performance, Valkey works with an in-memory dataset. Depending on your use case, you can persist it either by dumping the dataset to disk every once in a while, or by appending each command to a log.  Valkey also supports trivial-to-setup master-slave replication, with very fast non-blocking first synchronization, auto-reconnection on net split and so forth.  Other features include Transactions, Pub/Sub, Lua scripting, Keys with a limited time-to-live, and configuration settings to make Valkey behave like a cache.  You can use Valkey from most programming languages also.\n\nSecurity Fix(es):\n\n* redis: Redis: Remote Code Execution via specially crafted RESTORE payload (CVE-2026-66373)\n\n* valkey: Valkey: Remote code execution via use-after-free in stream deserialization (CVE-2026-63639)\n\n* valkey: Valkey: Remote code execution via TLS pending-data processing use-after-free (CVE-2026-56684)\n\nBug Fix(es) and Enhancement(s):\n\n* [Tracker] Rebase valkey to 8.0.10 (JIRA:Rocky Linux-216776)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "id": "RLSA-2026:64796",
  "modified": "2026-09-16T12:13:59.895612Z",
  "published": "2026-09-09T12:09:16.585859Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:64796"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517906"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2506985"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517907"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:64796"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Important: valkey security, bug fix, and enhancement update",
  "upstream": [
    "CVE-2026-56684",
    "CVE-2026-63639",
    "CVE-2026-66373"
  ]
}

rlsa-2026:64807

Vulnerability from osv_rocky

Published

2026-09-09 12:05

Modified

2026-09-16 12:13

Summary

Important: valkey security, bug fix, and enhancement update

Details

Security Fix(es):

redis: Redis: Remote Code Execution via specially crafted RESTORE payload (CVE-2026-66373)
valkey: Valkey: Remote code execution via use-after-free in stream deserialization (CVE-2026-63639)
valkey: Valkey: Remote code execution via TLS pending-data processing use-after-free (CVE-2026-56684)

Bug Fix(es) and Enhancement(s):

[Tracker] Rebase valkey to 8.0.10 (JIRA:Rocky Linux-216778)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Severity

8.8 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Credits

Rocky Enterprise Software Foundation

Red Hat

References

URL

Type

	https://errata.rockylinux.org/RLSA-2026:64807	ADVISORY
	https://bugzilla.redhat.com/show_bug.cgi?id=2506985	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517906	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517907	REPORT
	https://access.redhat.com/errata/RHSA-2026:64807	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:9",
        "name": "valkey",
        "purl": "pkg:rpm/rocky-linux/valkey?distro=rocky-linux-9\u0026epoch=0"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "AppStream"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0:8.0.10-1.el9_8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "database_specific": {
    "license": "CC-BY-4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory": "RHSA-2026:64807"
  },
  "details": "Valkey is an advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets.  You can run atomic operations on these types, like appending to a string; incrementing the value in a hash; pushing to a list; computing set intersection, union and difference; or getting the member with highest ranking in a sorted set.  In order to achieve its outstanding performance, Valkey works with an in-memory dataset. Depending on your use case, you can persist it either by dumping the dataset to disk every once in a while, or by appending each command to a log.  Valkey also supports trivial-to-setup master-slave replication, with very fast non-blocking first synchronization, auto-reconnection on net split and so forth.  Other features include Transactions, Pub/Sub, Lua scripting, Keys with a limited time-to-live, and configuration settings to make Valkey behave like a cache.  You can use Valkey from most programming languages also.\n\nSecurity Fix(es):\n\n* redis: Redis: Remote Code Execution via specially crafted RESTORE payload (CVE-2026-66373)\n\n* valkey: Valkey: Remote code execution via use-after-free in stream deserialization (CVE-2026-63639)\n\n* valkey: Valkey: Remote code execution via TLS pending-data processing use-after-free (CVE-2026-56684)\n\nBug Fix(es) and Enhancement(s):\n\n* [Tracker] Rebase valkey to 8.0.10 (JIRA:Rocky Linux-216778)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "id": "RLSA-2026:64807",
  "modified": "2026-09-16T12:13:55.387846Z",
  "published": "2026-09-09T12:05:17.368443Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:64807"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2506985"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517906"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517907"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:64807"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Important: valkey security, bug fix, and enhancement update",
  "upstream": [
    "CVE-2026-56684",
    "CVE-2026-63639",
    "CVE-2026-66373"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

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