validate the region name supplied by an S3 redirect

F-AWS-CLI-BOTOCORE-S3SSRF-001

Public snapshot: 26 Sep 2026. Status, releases and attribution belong to each source below; none is inferred from another record.

Recorded evidence

—score not recorded

boto/botocoreReported fixboto/botocore

validate the region name supplied by an S3 redirect

fixed in public source; rollout not reverified

details

Finding IDs: F-AWS-CLI-BOTOCORE-S3SSRF-001
Status: fixed in public source; rollout not reverified
Disclosure date: 4 Mar 2026
Note: PR #3644 validates region names from S3 redirect headers, response bodies and the HEAD fallback before endpoint use. Mapping is based on the reported redirect path and public diff. This does not establish a CVE assignment or a fixed AWS CLI release.

F-AWS-CLI-BOTOCORE-S3SSRF-001: Outbound request trust. A server-supplied region influences an outbound endpoint. Reviewed 24 Sep 2026. Mechanism assessed by 1seal.

Mechanism source for F-AWS-CLI-BOTOCORE-S3SSRF-001

Security area (1seal assessment): Authorization. A server-provided region must not redirect credential-bearing client requests outside the intended endpoint boundary. Reviewed 23 Sep 2026.

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How this page groups evidence

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