TI-2026-36974 Aliases CVE-2026-50221 GHSA-h8rc-w822-q8vq

Server-side request forgery in OpenStack Swift

LOW 23CWE-918Published 2026-06-23 · Updated 2026-06-23

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: Low · Low · Low
Fix status: Partial Red Hat: 6 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00217 12th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial Swift (OpenStack): 2.35.3, 2.36.2, 2.37.2swift (PyPI): 2.37.2Red Hat: 6 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
OpenStack	Swift	2.0.0 to before 2.35.3; 2.36.0 to before 2.36.2; 2.37.0 to before 2.37.2	2.35.3, 2.36.2, 2.37.2	Patch available	CNA
—	swift (PyPI)	before 2.37.2	2.37.2	Patch available	GHSA-h8rc-w822-q8vq

Swift VendorOpenStack Affected 2.0.0 to before 2.35.3; 2.36.0 to before 2.36.2; 2.37.0 to before 2.37.2 Fixed in 2.35.3, 2.36.2, 2.37.2 Patch available CNA
swift (PyPI) Vendor— Affected before 2.37.2 Fixed in 2.37.2 Patch available GHSA-h8rc-w822-q8vq

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:openstack:swift::::::::	2.0.0 to before 2.35.3; 2.36.0 to before 2.36.2; 2.37.0 to before 2.37.2	Vulnerable	OpenStack

cpe:2.3:a:openstack:swift:*:*:*:*:*:*:*:* Versions 2.0.0 to before 2.35.3; 2.36.0 to before 2.36.2; 2.37.0 to before 2.37.2 Vulnerable ·OpenStack

Remediation

Fix · CNA Swift (OpenStack) Fixed in 2.35.3, 2.36.2, 2.37.2
Fix · GHSA-h8rc-w822-q8vq swift (PyPI) Fixed in 2.37.2 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Developer Hub 1	Affected	No fix yet: Fix deferred
Red Hat OpenStack Platform 13 (Queens)	Affected	No fix planned: Out of support scope
Red Hat OpenStack Platform 16.2	Affected	No fix yet: Fix deferred
Red Hat OpenStack Platform 17.1	Affected	No fix yet: Fix deferred
Red Hat OpenStack Platform 18.0	Affected	No fix yet: Fix deferred
Self-service automation portal 2	Affected	No fix yet: Fix deferred

Timeline

2026-10-02 Threatist record created from CVE-2026-50221
2026-10-03 Alias added: GHSA-h8rc-w822-q8vq
2026-10-27 Affected versions changed · Red Hat

References

Exploit 1

https://launchpad.net/bugs/2150261

Patch 3

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-50221

Other 2

TI-2017-12224 An issue was discovered in middleware.py in OpenStack Swauth through 1.2.0 when used with… CVSS 3.0CRITICAL 9.8
TI-2012-03749 OpenStack Object Storage (swift) before 1.7.0 uses the loads function in the pickle… CVSS 3.1CRITICAL 9.8
TI-2016-00662 OpenStack Object Storage (Swift) before 2.3.1 (Kilo), 2.4.x, and 2.5.x before 2.5.1… CVSS 3.0HIGH 7.5
TI-2016-00661 OpenStack Object Storage (Swift) before 2.4.0 does not properly close client connections… CVSS 3.0HIGH 7.5
TI-2015-01667 OpenStack Object Storage (Swift) before 2.3.0, when allow_version is configured, allows… CVSS 2.0MEDIUM 5.5
TI-2026-36265 Infinite loop in OpenStack Swift CVSS 4.0HIGH 7.1

See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences