Vulnerability-Lookup

ubuntu-cve-2026-26081

Vulnerability from osv_ubuntu

Published

2026-02-12 00:00

Modified

2026-02-13 17:25

Summary

Details

crash via INITIAL packet for the NEW_TOKEN format

Severity

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-26081	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-26081	REPORT
	https://ubuntu.com/security/notices/USN-8036-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "haproxy",
            "binary_version": "3.0.12-0ubuntu0.25.10.3"
          },
          {
            "binary_name": "vim-haproxy",
            "binary_version": "3.0.12-0ubuntu0.25.10.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "haproxy",
        "purl": "pkg:deb/ubuntu/haproxy@3.0.12-0ubuntu0.25.10.3?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.0.12-0ubuntu0.25.10.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.8-1ubuntu1",
        "3.0.8-1ubuntu1.1",
        "3.0.10-1ubuntu1",
        "3.0.10-1ubuntu2",
        "3.0.10-1ubuntu3",
        "3.0.12-0ubuntu0.25.10.1"
      ]
    }
  ],
  "aliases": [],
  "details": "crash via INITIAL packet for the NEW_TOKEN format",
  "id": "UBUNTU-CVE-2026-26081",
  "modified": "2026-02-13T17:25:58Z",
  "published": "2026-02-12T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-26081"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-26081"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8036-1"
    }
  ],
  "related": [
    "USN-8036-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-26081"
  ]
}

CVE-2026-26081 (GCVE-0-2026-26081)

Vulnerability from cvelistv5 – Published: 2026-07-20 00:00 – Updated: 2026-07-20 18:18

Summary

HAProxy Community Edition 3.0 through 3.3 before 3.3.3 lacks a length check for the NEW_TOKEN format. HAProxy Enterprise and ALOHA are also affected.

Severity

4.8 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-130 - Improper Handling of Length Parameter Inconsistency

Assigner

mitre

References

2 references

URL	Tags
https://www.haproxy.org
https://git.haproxy.org/?p=haproxy-3.2.git;a=comm…

Impacted products

1 product

Vendor	Product	Version
HAProxy	HAProxy	Affected: 3.0 , < 3.0.12 (custom) Affected: 3.1 , < 3.1.14 (custom) Affected: 3.2 , < 3.2.12 (custom) Affected: 3.3 , < 3.3.3 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-26081",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-20T18:18:33.060272Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-20T18:18:45.876Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "HAProxy",
          "vendor": "HAProxy",
          "versions": [
            {
              "lessThan": "3.0.12",
              "status": "affected",
              "version": "3.0",
              "versionType": "custom"
            },
            {
              "lessThan": "3.1.14",
              "status": "affected",
              "version": "3.1",
              "versionType": "custom"
            },
            {
              "lessThan": "3.2.12",
              "status": "affected",
              "version": "3.2",
              "versionType": "custom"
            },
            {
              "lessThan": "3.3.3",
              "status": "affected",
              "version": "3.3",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "3.0.12",
                  "versionStartIncluding": "3.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "3.1.14",
                  "versionStartIncluding": "3.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "3.2.12",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "3.3.3",
                  "versionStartIncluding": "3.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "HAProxy Community Edition 3.0 through 3.3 before 3.3.3 lacks a length check for the NEW_TOKEN format. HAProxy Enterprise and ALOHA are also affected."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-130",
              "description": "CWE-130 Improper Handling of Length Parameter Inconsistency",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-20T15:40:37.756Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://www.haproxy.org"
        },
        {
          "url": "https://git.haproxy.org/?p=haproxy-3.2.git;a=commit;h=4765277f4f915baac2d57db63538ff0a59966deb"
        }
      ],
      "x_generator": {
        "engine": "enrichogram 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-26081",
    "datePublished": "2026-07-20T00:00:00.000Z",
    "dateReserved": "2026-02-11T00:00:00.000Z",
    "dateUpdated": "2026-07-20T18:18:45.876Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

usn-8036-1

Vulnerability from osv_ubuntu

Published

2026-02-12 14:55

Modified

2026-02-12 14:55

Summary

haproxy vulnerability

Details

Asim Viladi Oglu Manizada discovered that HAProxy incorrectly handled certain INITIAL packets. A remote attacker could possibly use this issue to cause HAProxy to crash, resulting in a denial of service.

References

URL

Type

	https://ubuntu.com/security/notices/USN-8036-1	ADVISORY
	https://ubuntu.com/security/CVE-2026-26081	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-26081",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:25.10"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "haproxy",
            "binary_version": "3.0.12-0ubuntu0.25.10.3"
          },
          {
            "binary_name": "vim-haproxy",
            "binary_version": "3.0.12-0ubuntu0.25.10.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "haproxy",
        "purl": "pkg:deb/ubuntu/haproxy@3.0.12-0ubuntu0.25.10.3?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.0.12-0ubuntu0.25.10.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.8-1ubuntu1",
        "3.0.8-1ubuntu1.1",
        "3.0.10-1ubuntu1",
        "3.0.10-1ubuntu2",
        "3.0.10-1ubuntu3",
        "3.0.12-0ubuntu0.25.10.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Asim Viladi Oglu Manizada discovered that HAProxy incorrectly handled\ncertain INITIAL packets. A remote attacker could possibly use this issue\nto cause HAProxy to crash, resulting in a denial of service.",
  "id": "USN-8036-1",
  "modified": "2026-02-12T14:55:12Z",
  "published": "2026-02-12T14:55:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8036-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-26081"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "haproxy vulnerability",
  "upstream": [
    "UBUNTU-CVE-2026-26081"
  ]
}

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.

Action not permitted

ubuntu-cve-2026-26081

Vulnerability from osv_ubuntu

CVE-2026-26081 (GCVE-0-2026-26081)

usn-8036-1

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature