Vulnerability-Lookup

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

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.

JSON

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{
  "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"
}

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

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
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

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-56684",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-18T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-19T03:56:13.565Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "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"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-416",
              "description": "CWE-416: Use After Free",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-18T14:19:51.047Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/valkey-io/valkey/security/advisories/GHSA-53mc-f3m3-99vh",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/valkey-io/valkey/security/advisories/GHSA-53mc-f3m3-99vh"
        },
        {
          "name": "https://github.com/valkey-io/valkey/pull/4234",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/valkey-io/valkey/pull/4234"
        },
        {
          "name": "https://github.com/valkey-io/valkey/commit/7cd5bcb7575d750ec2de618db80da58680a10fe3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/valkey-io/valkey/commit/7cd5bcb7575d750ec2de618db80da58680a10fe3"
        },
        {
          "name": "https://github.com/valkey-io/valkey/releases/tag/7.2.14",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/valkey-io/valkey/releases/tag/7.2.14"
        },
        {
          "name": "https://github.com/valkey-io/valkey/releases/tag/8.0.10",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/valkey-io/valkey/releases/tag/8.0.10"
        },
        {
          "name": "https://github.com/valkey-io/valkey/releases/tag/8.1.9",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/valkey-io/valkey/releases/tag/8.1.9"
        },
        {
          "name": "https://github.com/valkey-io/valkey/releases/tag/9.0.5",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/valkey-io/valkey/releases/tag/9.0.5"
        },
        {
          "name": "https://github.com/valkey-io/valkey/releases/tag/9.1.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/valkey-io/valkey/releases/tag/9.1.1"
        }
      ],
      "source": {
        "advisory": "GHSA-53mc-f3m3-99vh",
        "discovery": "UNKNOWN"
      },
      "title": "Valkey: TLS pending-data processing use-after-free may allow remote code execution"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-56684",
    "datePublished": "2026-08-18T14:19:51.047Z",
    "dateReserved": "2026-06-22T16:39:01.044Z",
    "dateUpdated": "2026-08-19T03:56:13.565Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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