Vulnerability-Lookup

CVE-2026-41726 (GCVE-0-2026-41726)

Vulnerability from cvelistv5 – Published: 2026-06-09 23:48 – Updated: 2026-06-27 21:14

Title

In Spring for Apache Kafka, unbounded delegate cache keyed on user-controlled, potentially malicious selector header

Summary

When an application opts into DelegatingDeserializer, a producer can grow the consumer's heap without bound by sending records with unique random spring.kafka.serialization.selector header values, eventually causing GC thrash and OutOfMemoryError. Affected versions: Spring for Apache Kafka 4.0.0 through 4.0.5; 3.3.0 through 3.3.15; 3.2.0 through 3.2.13; 2.9.0 through 2.9.13; 2.8.0 through 2.8.11.

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

vmware

References

1 reference

URL	Tags
https://spring.io/security/cve-2026-41726

Impacted products

1 product

Vendor	Product	Version
Spring	Spring for Apache Kafka	Affected: 4.0.0 , < 4.0.5.1 (custom) Affected: 3.3.0 , < 3.3.15.1 (custom) Affected: 3.2.0 , < 3.2.14 (custom) Affected: 2.9.0 , < 2.9.14 (custom) Affected: 2.8.0 , < 2.8.12 (custom)

Show details on NVD website

JSON

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FKIE_CVE-2026-41726

Vulnerability from fkie_nvd - Published: 2026-06-10 00:16 - Updated: 2026-07-23 09:10

Severity

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

Summary

References

	URL	Tags
	security@vmware.com	https://spring.io/security/cve-2026-41726	Vendor Advisory

Impacted products

Vendor	Product	Version
vmware	spring_for_apache_kafka	*
vmware	spring_for_apache_kafka	*
vmware	spring_for_apache_kafka	*
vmware	spring_for_apache_kafka	*
vmware	spring_for_apache_kafka	*

JSON

To clipboard

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GHSA-XVFQ-4Q6Q-GXX7

Vulnerability from github – Published: 2026-06-10 00:31 – Updated: 2026-06-12 21:51

Summary

In Spring for Apache Kafka, unbounded delegate cache keyed on user-controlled, potentially malicious selector header

Details

Affected versions: Spring for Apache Kafka 4.0.0 through 4.0.5; 3.3.0 through 3.3.15; 3.2.0 through 3.2.13; 2.9.0 through 2.9.13; 2.8.0 through 2.8.11.

Severity

6.5 (Medium)


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

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 4.0.5"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.springframework.kafka:spring-kafka"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.0.0"
            },
            {
              "fixed": "4.0.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 3.3.15"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.springframework.kafka:spring-kafka"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.3.0"
            },
            {
              "fixed": "3.3.16"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.springframework.kafka:spring-kafka"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.2.0"
            },
            {
              "last_affected": "3.2.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.springframework.kafka:spring-kafka"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.9.0"
            },
            {
              "last_affected": "2.9.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.springframework.kafka:spring-kafka"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "2.8.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-41726"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-12T21:51:01Z",
    "nvd_published_at": "2026-06-10T00:16:52Z",
    "severity": "MODERATE"
  },
  "details": "When an application opts into DelegatingDeserializer, a producer can grow the consumer\u0027s heap without bound by sending records with unique random spring.kafka.serialization.selector header values, eventually causing GC thrash and OutOfMemoryError.\n\nAffected versions:\nSpring for Apache Kafka 4.0.0 through 4.0.5; 3.3.0 through 3.3.15; 3.2.0 through 3.2.13; 2.9.0 through 2.9.13; 2.8.0 through 2.8.11.",
  "id": "GHSA-xvfq-4q6q-gxx7",
  "modified": "2026-06-12T21:51:01Z",
  "published": "2026-06-10T00:31:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41726"
    },
    {
      "type": "WEB",
      "url": "https://github.com/spring-projects/spring-kafka/issues/4489"
    },
    {
      "type": "WEB",
      "url": "https://github.com/spring-projects/spring-kafka/commit/ca2337ba789c5778a10197bda17a62915247ff6c"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/spring-projects/spring-kafka"
    },
    {
      "type": "WEB",
      "url": "https://spring.io/security/cve-2026-41726"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "In Spring for Apache Kafka, unbounded delegate cache keyed on user-controlled, potentially malicious selector header"
}

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.

Action not permitted

CVE-2026-41726 (GCVE-0-2026-41726)

FKIE_CVE-2026-41726

GHSA-XVFQ-4Q6Q-GXX7

Tags

Sightings

Nomenclature