Advisory severityMedium6.5Red Hat Linux

Medium [CVE-2026-71192] S3API cross-tenant object read via Swift-native header injection

This medium-severity Red Hat Linux advisory covers CVE-2026-71192.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-71192 Source published Jul 28, 2026Source updated Jul 28, 2026

VulniPulse record published Aug 6, 2026Record updated Aug 11, 2026

CVE-2026-71192

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Summary

S3API cross-tenant object read via Swift-native header injection. Red Hat rates this moderate (CVSS 6.5).

Weakness: CWE-863.

Affected versions

2.38.0

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Ensure the s3_acl configuration option is set to false (the default) in the [filter:s3api] section of proxy-server.conf. This completely mitigates the vulnerability because Swift's native authorization (Keystone/tempauth) will properly deny cross-tenant access attempts. If s3_acl=true is required and cannot be changed, restrict S3 API access to trusted networks or remove the s3api filter from the proxy-server pipeline until the patch is applied.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Discussion(0)

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