Vulnerability-Lookup

CVE-2026-109575 (GCVE-0-2026-109575)

Vulnerability from cvelistv5 – Published: 2026-10-12 19:32 – Updated: 2026-10-12 19:36

Summary

In HAProxy Data Plane API 2.2.0 through 3.4.3 (and corresponding Enterprise Edition releases), Server.ConfigureAPI() has process-global authentication logic that improperly drops security controls across multiple transport types. When a TLS Certificate Authority (tls_ca) is configured and a numeric TLS port (tls_port) is specified, the application globally disables Basic authentication on its shared internal request handler. Because this handler is shared concurrently among HTTP, HTTPS, and UNIX domain socket listeners, and mutual TLS (mTLS) client certificate verification (tls.RequireAndVerifyClientCert) is enforced exclusively on the HTTPS server path, all other simultaneously active non-mTLS listeners fail open. Consequently, an unauthenticated attacker capable of reaching an affected HTTP or UNIX management endpoint can completely bypass credentials to gain full API administrative access. This allows unauthorized remote or local actors to read sensitive, cleartext HAProxy configuration data or replace the managed configuration entirely via the raw configuration endpoint. This has been fixed in versions 3.4.4, 3.3.9, 3.2.17, 3.0.25, 2.9.29, and their respective EE backports by migrating to a per-request TLS connection-state validation model.

Severity

9.8 (Critical)


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

CWE

CWE-306 - Missing Authentication for Critical Function

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2293 records in the last 180 days details

References

4 references

URL	Tags
https://www.haproxy.com/documentation/haproxy-dat…
https://www.haproxy.com/documentation/haproxy-dat…
https://github.com/haproxytech/dataplaneapi/commi…
https://github.com/haproxytech/dataplaneapi/relea…

Impacted products

2 products

Vendor	Product	Version	CPE status
HAProxy	Data Plane API EE	Affected: 2.2.0-ee1 , ≤ 2.9.28-ee1 (custom) Affected: 3.0-ee , ≤ 3.0.24-ee1 (custom) Affected: 3.1-ee , ≤ 3.2.16-ee1 (custom) Affected: 3.3-ee , ≤ 3.3.8-ee1 (custom) Affected: 3.4-ee , ≤ 3.4.3-ee2 (custom)	guessed
HAProxy	Data Plane API CE	Affected: 2.2.0 , ≤ 2.9.28 (custom) Affected: 3.0.0 , ≤ 3.0.24 (custom) Affected: 3.1.0 , ≤ 3.2.16 (custom) Affected: 3.3.0 , ≤ 3.3.8 (custom) Affected: 3.4.0 , ≤ 3.4.3 (custom)	guessed

Show details on NVD website

JSON

To clipboard

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}

FKIE_CVE-2026-109575

Vulnerability from fkie_nvd - Published: 2026-10-12 20:17 - Updated: 2026-10-12 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
	cve@mitre.org	https://github.com/haproxytech/dataplaneapi/commit/c3ae4e3ccff5490d44650565e445c4b15e8aff8c
	cve@mitre.org	https://github.com/haproxytech/dataplaneapi/releases/tag/v3.4.4
	cve@mitre.org	https://www.haproxy.com/documentation/haproxy-data-plane-api/
	cve@mitre.org	https://www.haproxy.com/documentation/haproxy-data-plane-api/community/changelog/#version-3.4

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "packageName": "dataplaneapi",
          "product": "Data Plane API EE",
          "vendor": "HAProxy",
          "versions": [
            {
              "changes": [
                {
                  "at": "2.9.29-ee1",
                  "status": "unaffected"
                }
              ],
              "lessThanOrEqual": "2.9.28-ee1",
              "status": "affected",
              "version": "2.2.0-ee1",
              "versionType": "custom"
            },
            {
              "changes": [
                {
                  "at": "3.0.25-ee1",
                  "status": "unaffected"
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              "version": "3.0-ee",
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                {
                  "at": "3.2.17-ee1",
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              "lessThanOrEqual": "3.2.16-ee1",
              "status": "affected",
              "version": "3.1-ee",
              "versionType": "custom"
            },
            {
              "changes": [
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                  "status": "unaffected"
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              ],
              "lessThanOrEqual": "3.3.8-ee1",
              "status": "affected",
              "version": "3.3-ee",
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            {
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                {
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              "lessThanOrEqual": "3.4.3-ee2",
              "status": "affected",
              "version": "3.4-ee",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "dataplaneapi-ee",
          "product": "Data Plane API CE",
          "repo": "https://github.com/haproxytech/dataplaneapi",
          "vendor": "HAProxy",
          "versions": [
            {
              "changes": [
                {
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                  "status": "unaffected"
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              "lessThanOrEqual": "2.9.28",
              "status": "affected",
              "version": "2.2.0",
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              "lessThanOrEqual": "3.0.24",
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              "version": "3.0.0",
              "versionType": "custom"
            },
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    }
  ],
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      "lang": "en",
      "value": "In HAProxy Data Plane API 2.2.0 through 3.4.3 (and corresponding Enterprise Edition releases), Server.ConfigureAPI() has process-global authentication logic that improperly drops security controls across multiple transport types. When a TLS Certificate Authority (tls_ca) is configured and a numeric TLS port (tls_port) is specified, the application globally disables Basic authentication on its shared internal request handler. Because this handler is shared concurrently among HTTP, HTTPS, and UNIX domain socket listeners, and mutual TLS (mTLS) client certificate verification (tls.RequireAndVerifyClientCert) is enforced exclusively on the HTTPS server path, all other simultaneously active non-mTLS listeners fail open. Consequently, an unauthenticated attacker capable of reaching an affected HTTP or UNIX management endpoint can completely bypass credentials to gain full API administrative access. This allows unauthorized remote or local actors to read sensitive, cleartext HAProxy configuration data or replace the managed configuration entirely via the raw configuration endpoint. This has been fixed in versions 3.4.4, 3.3.9, 3.2.17, 3.0.25, 2.9.29, and their respective EE backports by migrating to a per-request TLS connection-state validation model."
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  "references": [
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    },
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/haproxytech/dataplaneapi/releases/tag/v3.4.4"
    },
    {
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      "url": "https://www.haproxy.com/documentation/haproxy-data-plane-api/"
    },
    {
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      "url": "https://www.haproxy.com/documentation/haproxy-data-plane-api/community/changelog/#version-3.4"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ],
      "source": "cve@mitre.org",
      "type": "Primary"
    }
  ]
}

GHSA-7JQW-RHP8-C8VF

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

Details

Severity

9.8 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-109575"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-12T20:17:09Z",
    "severity": "CRITICAL"
  },
  "details": "In HAProxy Data Plane API 2.2.0 through 3.4.3 (and corresponding Enterprise Edition releases), Server.ConfigureAPI() has process-global authentication logic that improperly drops security controls across multiple transport types. When a TLS Certificate Authority (tls_ca) is configured and a numeric TLS port (tls_port) is specified, the application globally disables Basic authentication on its shared internal request handler. Because this handler is shared concurrently among HTTP, HTTPS, and UNIX domain socket listeners, and mutual TLS (mTLS) client certificate verification (tls.RequireAndVerifyClientCert) is enforced exclusively on the HTTPS server path, all other simultaneously active non-mTLS listeners fail open. Consequently, an unauthenticated attacker capable of reaching an affected HTTP or UNIX management endpoint can completely bypass credentials to gain full API administrative access. This allows unauthorized remote or local actors to read sensitive, cleartext HAProxy configuration data or replace the managed configuration entirely via the raw configuration endpoint. This has been fixed in versions 3.4.4, 3.3.9, 3.2.17, 3.0.25, 2.9.29, and their respective EE backports by migrating to a per-request TLS connection-state validation model.",
  "id": "GHSA-7jqw-rhp8-c8vf",
  "modified": "2026-10-12T21:31:56Z",
  "published": "2026-10-12T21:31:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109575"
    },
    {
      "type": "WEB",
      "url": "https://github.com/haproxytech/dataplaneapi/commit/c3ae4e3ccff5490d44650565e445c4b15e8aff8c"
    },
    {
      "type": "WEB",
      "url": "https://github.com/haproxytech/dataplaneapi/releases/tag/v3.4.4"
    },
    {
      "type": "WEB",
      "url": "https://www.haproxy.com/documentation/haproxy-data-plane-api"
    },
    {
      "type": "WEB",
      "url": "https://www.haproxy.com/documentation/haproxy-data-plane-api/community/changelog/#version-3.4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

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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.
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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-2026-109575 (GCVE-0-2026-109575)

FKIE_CVE-2026-109575

GHSA-7JQW-RHP8-C8VF

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