In OpenStack Swift before 2.37.2, proxy-server does not strip internal update headers (X-Container-Host, X-Container-Device, X-Delete-At-Host, X-Delete-At-Device) from client requests before forwarding them to object-servers. An authenticated user with write access can inject these headers to redirect container update requests to an attacker-controlled server, enabling server-side request forgery. The SSRF requests expose internal cluster metadata including storage policy indexes, partition mappings, device names, and when at rest encryption is enabled, cipher text and initialization vectors for the container-level encryption key. The attacker can also cause "ghost listings" in arbitrary containers via the shard-range redirect mechanism.
History

Fri, 26 Jun 2026 00:15:00 +0000

Type Values Removed Values Added
Title openstack-swift: OpenStack Swift: SSRF via internal update header injection in proxy-server
References
Metrics threat_severity

None

cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}

threat_severity

Moderate


Wed, 24 Jun 2026 11:15:00 +0000

Type Values Removed Values Added
Title SSRF via Unstripped Internal Update Headers in OpenStack Swift Proxy

Wed, 24 Jun 2026 07:15:00 +0000

Type Values Removed Values Added
Title SSRF via Unstripped Internal Update Headers in OpenStack Swift Proxy

Wed, 24 Jun 2026 04:30:00 +0000

Type Values Removed Values Added
Title OpenStack Swift SSRF via internal update headers leaking cluster metadata

Wed, 24 Jun 2026 01:00:00 +0000

Type Values Removed Values Added
Title OpenStack Swift SSRF via internal update headers leaking cluster metadata

Tue, 23 Jun 2026 21:45:00 +0000

Type Values Removed Values Added
Title SSRF via Unstripped Internal Headers in OpenStack Swift Proxy Server

Tue, 23 Jun 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 23 Jun 2026 19:15:00 +0000

Type Values Removed Values Added
Title SSRF via Unstripped Internal Headers in OpenStack Swift Proxy Server

Tue, 23 Jun 2026 17:30:00 +0000

Type Values Removed Values Added
Description In OpenStack Swift before 2.37.2, proxy-server does not strip internal update headers (X-Container-Host, X-Container-Device, X-Delete-At-Host, X-Delete-At-Device) from client requests before forwarding them to object-servers. An authenticated user with write access can inject these headers to redirect container update requests to an attacker-controlled server, enabling server-side request forgery. The SSRF requests expose internal cluster metadata including storage policy indexes, partition mappings, device names, and when at rest encryption is enabled, cipher text and initialization vectors for the container-level encryption key. The attacker can also cause "ghost listings" in arbitrary containers via the shard-range redirect mechanism.
First Time appeared Openstack
Openstack swift
Weaknesses CWE-918
CPEs cpe:2.3:a:openstack:swift:*:*:*:*:*:*:*:*
Vendors & Products Openstack
Openstack swift
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-06-23T17:03:32.971Z

Updated: 2026-06-23T17:38:26.623Z

Reserved: 2026-06-04T04:51:16.073Z

Link: CVE-2026-50221

cve-icon Vulnrichment

Updated: 2026-06-23T17:35:50.922Z

cve-icon NVD

No data.

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-06-23T17:03:32Z

Links: CVE-2026-50221 - Bugzilla