EUVD Vulnerability Catalog
EUVD-2026-84118
Severity: CRITICAL
Base Score: 9.4
CVSS Version: 4.0
Vulnerability Description
In OpenStack Octavia before 18.0.1, the Amphora provider driver did not validate the listener and pool tls_ciphers field for control characters. The value is written verbatim into the HAProxy configuration generated on the amphora, and thus an authenticated project member who owns a TLS-enabled load balancer can embed a newline and inject arbitrary HAProxy configuration directives. Only deployments using the Amphora provider are affected.
CVSS Vector Analysis
Below is the complete, human-readable breakdown of the CVSS metric string: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
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Attack Vector (AV): Network
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Attack Complexity (AC): Low
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Attack Requirements (AT): None
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Privileges Required (PR): Low
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User Interaction (UI): None
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Vulnerability Confidentiality Impact (VC): High
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Vulnerability Integrity Impact (VI): High
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Vulnerability Availability Impact (VA): High
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Subsequent Confidentiality Impact (SC): High
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Subsequent Integrity Impact (SI): High
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Subsequent Availability Impact (SA): High
Affected Vendors & Systems
Vendor
OpenStack
References & Advisory Links
- https://bugs.launchpad.net/octavia/+bug/2162101
- https://bugs.launchpad.net/octavia/+bug/2167565
- https://bugs.debian.org/1148175
- https://opendev.org/openstack/octavia/commit/cad62902e4984a46ad80cbfa943e90006d8d599d
- https://security.openstack.org/ossa/OSSA-2026-039.html
- https://openwall.com/lists/oss-security/2026/09/21/6
Metadata Profile
Database Authority
European Union Agency for Cybersecurity (ENISA) EUVD
Assigner
mitre
EPSS Probability
0.53
Known Aliases
CVE-2026-94572
GHSA-xwpf-r3rp-gx2r
Published On
2026-09-21
Last Updated
2026-09-24