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

Vulnerability from cvelistv5 – Published: 2026-07-20 00:00 – Updated: 2026-07-20 18:18
VLAI
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
References
Impacted products
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)
Create a notification for this product.
Show details on NVD website
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",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-26081",
      "date": "2026-07-23",
      "epss": "0.00363",
      "percentile": "0.28765"
    },
    "microsoft_vex": {
      "current_release_date": "2026-07-23T01:05:54.000Z",
      "cve": "CVE-2026-26081",
      "id": "msrc_CVE-2026-26081",
      "initial_release_date": "2026-07-23T01:05:54.000Z",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "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.",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-26081.json",
      "version": "1"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-26081\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2026-07-20T16:16:57.203\",\"lastModified\":\"2026-07-21T19:49:44.020\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"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.\"}],\"affected\":[{\"source\":\"cve@mitre.org\",\"affectedData\":[{\"vendor\":\"HAProxy\",\"product\":\"HAProxy\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"3.0\",\"lessThan\":\"3.0.12\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"3.1\",\"lessThan\":\"3.1.14\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"3.2\",\"lessThan\":\"3.2.12\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"3.3\",\"lessThan\":\"3.3.3\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"cve@mitre.org\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L\",\"baseScore\":4.8,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.2,\"impactScore\":2.5}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-07-20T18:18:33.060272Z\",\"id\":\"CVE-2026-26081\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"cve@mitre.org\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-130\"}]}],\"references\":[{\"url\":\"https://git.haproxy.org/?p=haproxy-3.2.git;a=commit;h=4765277f4f915baac2d57db63538ff0a59966deb\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://www.haproxy.org\",\"source\":\"cve@mitre.org\"}]}}",
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-07-15T05:25:46Z",
      "cve": "CVE-2026-26081",
      "id": "CVE-2026-26081",
      "initial_release_date": "2026-02-13T00:24:54Z",
      "product_status:known_not_affected": "11",
      "product_status:recommended": "5",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-26081",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-26081.json",
      "version": "8"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-26081\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-07-20T18:18:33.060272Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-07-20T18:18:40.560Z\"}}], \"cna\": {\"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.8, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"HAProxy\", \"product\": \"HAProxy\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.0\", \"lessThan\": \"3.0.12\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"3.1\", \"lessThan\": \"3.1.14\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"3.2\", \"lessThan\": \"3.2.12\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"3.3\", \"lessThan\": \"3.3.3\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unaffected\"}], \"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\"}, \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-130\", \"description\": \"CWE-130 Improper Handling of Length Parameter Inconsistency\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"3.0.12\", \"versionStartIncluding\": \"3.0\"}, {\"criteria\": \"cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"3.1.14\", \"versionStartIncluding\": \"3.1\"}, {\"criteria\": \"cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"3.2.12\", \"versionStartIncluding\": \"3.2\"}, {\"criteria\": \"cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"3.3.3\", \"versionStartIncluding\": \"3.3\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"shortName\": \"mitre\", \"dateUpdated\": \"2026-07-20T15:40:37.756Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-26081\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-20T18:18:45.876Z\", \"dateReserved\": \"2026-02-11T00:00:00.000Z\", \"assignerOrgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"datePublished\": \"2026-07-20T00:00:00.000Z\", \"assignerShortName\": \"mitre\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.