Vulnerability-Lookup

CVE-2026-111496 (GCVE-0-2026-111496)

Vulnerability from cvelistv5 – Published: 2026-10-28 16:45 – Updated: 2026-10-28 20:06

Title

Apache Kafka: Kafka Streams StreamThread hang from integer overflow in stream-time punctuation

Summary

Kafka Streams derives its stream-time clock from record timestamps. PunctuationSchedule.next() computed the next punctuation time as timestamp + (intervalsMissed + 1) * interval with no overflow check. A record with a timestamp at or near Long.MAX_VALUE advances stream time to that value, so the next stream-time punctuation overflows to a negative time. PunctuationQueue then re-queues that time and loops on it indefinitely while holding a lock, stalling the StreamThread. Impact: A single record is enough. The affected StreamThread stops processing, and because the record stays in the topic the hang returns on restart; an application whose partitions are all affected becomes unresponsive. Only the Streams application is affected, not the brokers or the cluster. Triggering it needs write access to a source topic whose topology uses stream-time punctuation, and a broker that stores the record: brokers from Apache Kafka 4.0.0 reject such a timestamp by default (log.message.timestamp.after.max.ms, one hour), so it is reachable only on older brokers or where that bound has been relaxed. Mitigation: Upgrade Kafka Streams to 4.2.2, 4.3.2, or 4.4.0. As defense in depth, keep log.message.timestamp.after.max.ms bounded on source topics and restrict write access to them. Resolution: From Apache Kafka 4.2.2, 4.3.2, and 4.4.0: the next punctuation time is computed with overflow-checked arithmetic (clamped to Long.MAX_VALUE), and a rescheduled punctuation is re-queued only when its time moves forward.

Severity

No CVSS data available.

CWE

CWE-190 - Integer overflow or wraparound
CWE-835 - Loop with unreachable exit condition ('infinite loop')

Assigner

apache CNA under the mitre root

CNA scorecard B 76/100 over 1090 records in the last 180 days details

References

2 references

URL	Tags
https://kafka.apache.org/cve-list	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/1…

Impacted products

1 product

Vendor	Product	Version	CPE status
Apache Software Foundation	Apache Kafka	Affected: 1.1.0 , ≤ 4.1.2 (semver) Affected: 4.2.0 , ≤ 4.2.1 (semver) Affected: 4.3.0 , ≤ 4.3.1 (semver)	guessed

Credits

Mike Read (GitHub: Michael-JRead) Matthias J. Sax <matthias@confluent.io>

Show details on NVD website

JSON

To clipboard

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          "url": "https://kafka.apache.org/cve-list"
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      "title": "Apache Kafka: Kafka Streams StreamThread hang from integer overflow in stream-time punctuation",
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    "datePublished": "2026-10-28T16:45:08.114Z",
    "dateReserved": "2026-10-16T09:55:02.432Z",
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                "collectionURL": "https://repo.maven.apache.org/maven2",
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                "packageName": "org.apache.kafka:kafka-streams",
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                    "status": "affected",
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                    "versionType": "semver"
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              }
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            "source": "security@apache.org"
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            "lang": "en",
            "value": "Kafka Streams derives its stream-time clock from record timestamps. PunctuationSchedule.next()\u00a0computed the next punctuation time as timestamp + (intervalsMissed + 1) * interval with no\u00a0overflow check. A record with a timestamp at or near Long.MAX_VALUE advances stream time to that\u00a0value, so the next stream-time punctuation overflows to a negative time. PunctuationQueue then\u00a0re-queues that time and loops on it indefinitely while holding a lock, stalling the StreamThread.\n\n\nImpact:\n\nA single record is enough. The affected StreamThread stops processing, and because the record\u00a0stays in the topic the hang returns on restart; an application whose partitions are all affected\u00a0becomes unresponsive. Only the Streams application is affected, not the brokers or the cluster.\u00a0Triggering it needs write access to a source topic whose topology uses stream-time punctuation,\u00a0and a broker that stores the record: brokers from Apache Kafka 4.0.0 reject such a timestamp by\u00a0default (log.message.timestamp.after.max.ms, one hour), so it is reachable only on older brokers\u00a0or where that bound has been relaxed.\n\n\nMitigation:\n\nUpgrade Kafka Streams to 4.2.2, 4.3.2, or 4.4.0. As defense in depth, keep\u00a0log.message.timestamp.after.max.ms bounded on source topics and restrict write access to them.\n\n\nResolution:\n\nFrom Apache Kafka 4.2.2, 4.3.2, and 4.4.0: the next punctuation time is computed with\u00a0overflow-checked arithmetic (clamped to Long.MAX_VALUE), and a rescheduled punctuation is\u00a0re-queued only when its time moves forward."
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            "source": "security@apache.org",
            "url": "https://kafka.apache.org/cve-list"
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            "source": "af854a3a-2127-422b-91ae-364da2661108",
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        "vulnStatus": "Awaiting Analysis",
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                "value": "CWE-190"
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            "source": "security@apache.org",
            "type": "Secondary"
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  }
}

CERTFR-2026-AVI-1415

Vulnerability from certfr_avis - Published: 2026-10-29 - Updated: 2026-10-29

De multiples vulnérabilités ont été découvertes dans Apache Kafka. Certaines d'entre elles permettent à un attaquant de provoquer un déni de service à distance, une atteinte à la confidentialité des données et une atteinte à l'intégrité des données.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

Vendor	Product	Description
Apache	Kafka	Apache Kafka versions antérieures à 4.2.2
Apache	Kafka	Apache Kafka versions antérieures à 4.4.0 pour la vulnérabilité CVE-2026-110952
Apache	Kafka	Apache Kafka versions 4.3.x antérieures à 4.3.2

References

Title

Publication Time

GHSA-F6X4-CQ8Q-X8CQ

Vulnerability from github – Published: 2026-10-28 18:32 – Updated: 2026-10-28 21:31

Details

Impact:

A single record is enough. The affected StreamThread stops processing, and because the record stays in the topic the hang returns on restart; an application whose partitions are all affected becomes unresponsive. Only the Streams application is affected, not the brokers or the cluster. Triggering it needs write access to a source topic whose topology uses stream-time punctuation, and a broker that stores the record: brokers from Apache Kafka 4.0.0 reject such a timestamp by default (log.message.timestamp.after.max.ms, one hour), so it is reachable only on older brokers or where that bound has been relaxed.

Mitigation:

Upgrade Kafka Streams to 4.2.2, 4.3.2, or 4.4.0. As defense in depth, keep log.message.timestamp.after.max.ms bounded on source topics and restrict write access to them.

Resolution:

From Apache Kafka 4.2.2, 4.3.2, and 4.4.0: the next punctuation time is computed with overflow-checked arithmetic (clamped to Long.MAX_VALUE), and a rescheduled punctuation is re-queued only when its time moves forward.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-111496"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-28T17:17:39Z",
    "severity": null
  },
  "details": "Kafka Streams derives its stream-time clock from record timestamps. PunctuationSchedule.next()\u00a0computed the next punctuation time as timestamp + (intervalsMissed + 1) * interval with no\u00a0overflow check. A record with a timestamp at or near Long.MAX_VALUE advances stream time to that\u00a0value, so the next stream-time punctuation overflows to a negative time. PunctuationQueue then\u00a0re-queues that time and loops on it indefinitely while holding a lock, stalling the StreamThread.\n\n\nImpact:\n\nA single record is enough. The affected StreamThread stops processing, and because the record\u00a0stays in the topic the hang returns on restart; an application whose partitions are all affected\u00a0becomes unresponsive. Only the Streams application is affected, not the brokers or the cluster.\u00a0Triggering it needs write access to a source topic whose topology uses stream-time punctuation,\u00a0and a broker that stores the record: brokers from Apache Kafka 4.0.0 reject such a timestamp by\u00a0default (log.message.timestamp.after.max.ms, one hour), so it is reachable only on older brokers\u00a0or where that bound has been relaxed.\n\n\nMitigation:\n\nUpgrade Kafka Streams to 4.2.2, 4.3.2, or 4.4.0. As defense in depth, keep\u00a0log.message.timestamp.after.max.ms bounded on source topics and restrict write access to them.\n\n\nResolution:\n\nFrom Apache Kafka 4.2.2, 4.3.2, and 4.4.0: the next punctuation time is computed with\u00a0overflow-checked arithmetic (clamped to Long.MAX_VALUE), and a rescheduled punctuation is\u00a0re-queued only when its time moves forward.",
  "id": "GHSA-f6x4-cq8q-x8cq",
  "modified": "2026-10-28T21:31:14Z",
  "published": "2026-10-28T18:32:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111496"
    },
    {
      "type": "WEB",
      "url": "https://kafka.apache.org/cve-list"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/10/28/14"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

UBUNTU-CVE-2026-111496 (CVE-2026-111496)

Vulnerability from osv_ubuntu – Published: 2026-10-29 00:00 – Updated: 2026-10-29 00:00 – Source website

Details

Severity

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-111496	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-111496	REPORT
	https://kafka.apache.org/cve-list	REPORT
	http://www.openwall.com/lists/oss-security/2026/1…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "kafka",
            "binary_version": "2.2.2u1-0ubuntu1+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "kafka",
        "purl": "pkg:deb/ubuntu/kafka@2.2.2u1-0ubuntu1+esm2?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.2.0u2-0ubuntu3.1",
        "2.2.0u2-0ubuntu3.2",
        "2.2.2u1-0ubuntu1+esm2"
      ]
    }
  ],
  "aliases": [],
  "details": "Kafka Streams derives its stream-time clock from record timestamps. PunctuationSchedule.next()\u00a0computed the next punctuation time as timestamp + (intervalsMissed + 1) * interval with no\u00a0overflow check. A record with a timestamp at or near Long.MAX_VALUE advances stream time to that\u00a0value, so the next stream-time punctuation overflows to a negative time. PunctuationQueue then\u00a0re-queues that time and loops on it indefinitely while holding a lock, stalling the StreamThread. Impact: A single record is enough. The affected StreamThread stops processing, and because the record\u00a0stays in the topic the hang returns on restart; an application whose partitions are all affected\u00a0becomes unresponsive. Only the Streams application is affected, not the brokers or the cluster.\u00a0Triggering it needs write access to a source topic whose topology uses stream-time punctuation,\u00a0and a broker that stores the record: brokers from Apache Kafka 4.0.0 reject such a timestamp by\u00a0default (log.message.timestamp.after.max.ms, one hour), so it is reachable only on older brokers\u00a0or where that bound has been relaxed. Mitigation: Upgrade Kafka Streams to 4.2.2, 4.3.2, or 4.4.0. As defense in depth, keep\u00a0log.message.timestamp.after.max.ms bounded on source topics and restrict write access to them. Resolution: From Apache Kafka 4.2.2, 4.3.2, and 4.4.0: the next punctuation time is computed with\u00a0overflow-checked arithmetic (clamped to Long.MAX_VALUE), and a rescheduled punctuation is\u00a0re-queued only when its time moves forward.",
  "id": "UBUNTU-CVE-2026-111496",
  "modified": "2026-10-29T00:00:00Z",
  "published": "2026-10-29T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-111496"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-111496"
    },
    {
      "type": "REPORT",
      "url": "https://kafka.apache.org/cve-list"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2026/10/28/14"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-111496"
  ]
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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

CVE-2026-111496 (GCVE-0-2026-111496)

CERTFR-2026-AVI-1415

Solutions

GHSA-F6X4-CQ8Q-X8CQ

UBUNTU-CVE-2026-111496 (CVE-2026-111496)

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour