Vulnerability-Lookup

CVE-2026-84372 (GCVE-0-2026-84372)

Vulnerability from cvelistv5 – Published: 2026-09-01 21:20 – Updated: 2026-09-02 19:33

Title

Predis: Redis command injection and denial of service via CRLF smuggling in pipelined commands on aggregate connections

Summary

Predis is a flexible and feature-complete Redis and Valkey client for PHP. From version 3.0.0-RC1 until version 3.3.0, pipeline handling on aggregate cluster and replication connections reparses an already serialized RESP buffer in AbstractAggregateConnection::write() by splitting it with explode("\r\n") instead of honoring RESP length prefixes. Attacker-controlled keys or values containing CRLF sequences can therefore be interpreted by Command::deserializeCommand() as additional commands. On cluster connections, ClusterStrategy::getFakeKey() can route injected keyless commands using the literal fake key value "key", permitting operations such as shard-wide cache deletion, targeted data modification, data reads, or node disruption. On replication connections, malformed reparsing can throw an uncaught exception and repeatedly terminate affected requests. Only pipeline() reaches this vulnerable path; transaction() and MULTI are not affected. This issue is fixed in version 3.3.0.

Severity

9.8 (Critical)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-02 19:16 UTC

CWE

CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')

Assigner

GitHub_M mitre root

References

5 references

URL	Tags
https://github.com/predis/predis/security/advisor…	x_refsource_CONFIRM
https://github.com/predis/predis/issues/1574	x_refsource_MISC
https://github.com/predis/predis/pull/1586	x_refsource_MISC
https://github.com/predis/predis/commit/053cb4b6a…	x_refsource_MISC
https://github.com/predis/predis/releases/tag/v3.3.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
predis	predis	Affected: >= 3.0.0-RC1, < 3.3.0	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-84372

Vulnerability from fkie_nvd - Published: 2026-09-01 22:17 - Updated: 2026-09-02 20:17

Severity

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

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/predis/predis/commit/053cb4b6ac7fb1f469ead96a78d059bc0458e408
	security-advisories@github.com	https://github.com/predis/predis/issues/1574
	security-advisories@github.com	https://github.com/predis/predis/pull/1586
	security-advisories@github.com	https://github.com/predis/predis/releases/tag/v3.3.0
	security-advisories@github.com	https://github.com/predis/predis/security/advisories/GHSA-w6f5-v2h6-g786
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/predis/predis/issues/1574
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/predis/predis/security/advisories/GHSA-w6f5-v2h6-g786

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "predis",
          "vendor": "predis",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 3.0.0-RC1, \u003c 3.3.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Predis is a flexible and feature-complete Redis and Valkey client for PHP. From version 3.0.0-RC1 until version 3.3.0, pipeline handling on aggregate cluster and replication connections reparses an already serialized RESP buffer in AbstractAggregateConnection::write() by splitting it with explode(\"\\r\\n\") instead of honoring RESP length prefixes. Attacker-controlled keys or values containing CRLF sequences can therefore be interpreted by Command::deserializeCommand() as additional commands. On cluster connections, ClusterStrategy::getFakeKey() can route injected keyless commands using the literal fake key value \"key\", permitting operations such as shard-wide cache deletion, targeted data modification, data reads, or node disruption. On replication connections, malformed reparsing can throw an uncaught exception and repeatedly terminate affected requests. Only pipeline() reaches this vulnerable path; transaction() and MULTI are not affected. This issue is fixed in version 3.3.0."
    }
  ],
  "id": "CVE-2026-84372",
  "lastModified": "2026-09-02T20:17:40.793",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
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      "source": "security-advisories@github.com",
      "url": "https://github.com/predis/predis/releases/tag/v3.3.0"
    },
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      "source": "security-advisories@github.com",
      "url": "https://github.com/predis/predis/security/advisories/GHSA-w6f5-v2h6-g786"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/predis/predis/issues/1574"
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      "type": "Secondary"
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}

ubuntu-cve-2026-84372

Vulnerability from osv_ubuntu

Published

2026-09-02 00:00

Modified

2026-09-03 13:25

Summary

Details

(Predis is a flexible and feature-complete Redis and Valkey client for ...)

Severity

9.8 (Critical)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-84372	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-84372	REPORT
	https://github.com/predis/predis/security/advisor…	REPORT
	https://github.com/predis/predis/issues/1574	REPORT
	https://github.com/predis/predis/pull/1586	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "php-nrk-predis",
            "binary_version": "1.0.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "php-nrk-predis",
        "purl": "pkg:deb/ubuntu/php-nrk-predis@1.0.0-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "php-nrk-predis",
            "binary_version": "1.0.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "php-nrk-predis",
        "purl": "pkg:deb/ubuntu/php-nrk-predis@1.0.0-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "php-nrk-predis",
            "binary_version": "1.0.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "php-nrk-predis",
        "purl": "pkg:deb/ubuntu/php-nrk-predis@1.0.0-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "php-nrk-predis",
            "binary_version": "1.1.10-1"
          },
          {
            "binary_name": "php-predis",
            "binary_version": "1.1.10-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "php-nrk-predis",
        "purl": "pkg:deb/ubuntu/php-nrk-predis@1.1.10-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.0-1",
        "1.1.9-5",
        "1.1.10-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "php-predis",
            "binary_version": "2.2.2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "php-nrk-predis",
        "purl": "pkg:deb/ubuntu/php-nrk-predis@2.2.2-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.2.0-1",
        "2.2.2-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "php-predis",
            "binary_version": "2.4.1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "php-nrk-predis",
        "purl": "pkg:deb/ubuntu/php-nrk-predis@2.4.1-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.0-1",
        "2.4.1-1"
      ]
    }
  ],
  "aliases": [],
  "details": "(Predis is a flexible and feature-complete Redis and Valkey client for ...)",
  "id": "UBUNTU-CVE-2026-84372",
  "modified": "2026-09-03T13:25:53Z",
  "published": "2026-09-02T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-84372"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-84372"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/predis/predis/security/advisories/GHSA-w6f5-v2h6-g786"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/predis/predis/issues/1574"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/predis/predis/pull/1586"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-84372"
  ]
}

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.

Action not permitted

CVE-2026-84372 (GCVE-0-2026-84372)

FKIE_CVE-2026-84372

ubuntu-cve-2026-84372

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature