swift: In OpenStack Swift before 2.37.2, proxy-server does not strip internal update headers (X-Container-Host, X-Container-...
CVE-2026-50221 is fixed in swift on 1 platform, first by DEBIAN-CVE-2026-50221, released June 30, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| swift · Debian 12.15 (bookworm) | 2.30.1-0+deb12u2 | DEBIAN-CVE-2026-50221 | Jun 30, 2026 |
| swift · Debian 13.5 (trixie) | 2.35.1-0+deb13u3 | DEBIAN-CVE-2026-50221 | Jun 30, 2026 |
| swift · Debian 14 | 2.37.1-5 | DEBIAN-CVE-2026-50221 | Jun 30, 2026 |
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