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2 vulnerabilities found for Data Plane API CE by HAProxy
CVE-2026-109575 (GCVE-0-2026-109575)
Vulnerability from nvd – Published: 2026-10-12 19:32 – Updated: 2026-10-13 15:59
VLAI
EPSS
VEX
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)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 15:59 UTC
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| 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) |
|
| 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) |
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CVE-2026-109575 (GCVE-0-2026-109575)
Vulnerability from cvelistv5 – Published: 2026-10-12 19:32 – Updated: 2026-10-13 15:59
VLAI
EPSS
VEX
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)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 15:59 UTC
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| 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) |
|
| 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) |
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