https://seclists.org/oss-sec/2026/q3/453: [OSSA-2026-030] OpenStack Swift: S3API header authorization bypass (CVE-2026-71191, CVE-2026-71192)

Published Aug 5, 2026
·
Updated

Affected Software

1 affected component
Openstack Swift>=2.18.0<2.35.4, >=2.36.0<2.36.3, >=2.37.0<2.37.3, =2.38.0
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Frequently Asked Questions

1

What is the severity of OSSA-2026-030?

OSSA-2026-030 is classified as a high-severity vulnerability that allows for unauthorized header access in OpenStack Swift.

2

How do I fix OSSA-2026-030?

To fix OSSA-2026-030, upgrade OpenStack Swift to versions 2.35.4, 2.36.3, or 2.37.3 or later.

3

What versions of OpenStack Swift are affected by OSSA-2026-030?

OSSA-2026-030 affects OpenStack Swift versions >=2.18.0 <2.35.4, >=2.36.0 <2.36.3, and >=2.37.0 <2.37.3.

4

What type of vulnerability is OSSA-2026-030?

OSSA-2026-030 is an authorization bypass vulnerability affecting the S3API headers in OpenStack Swift.

5

When was OSSA-2026-030 published?

OSSA-2026-030 was published on August 5, 2026.

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