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CVE-2026-50221GHSA-H8RC-W822-Q8VQPYSEC-2026-4173

In OpenStack Swift before 2.37.2, proxy-server does not strip internal update headers (X-Container-Host, X-Container-Device, X-Delete-At-Hos

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 2.35.3, 2.36.2, 2.37.2
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • OpenStack Swift

    From 2.0.0 · fixed in 2.35.3; From 2.36.0 · fixed in 2.36.2; From 2.37.0 · fixed in 2.37.2

  • swiftPyPI

    fixed in 2.37.2

  • swiftPyPI

    fixed in 2.37.2

References 3

launchpad.net

openwall.com

security.openstack.org