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CVE-2026-115374

Incus 7.0.0 before 7.0.2 and 7.1.0 before 7.5.0 Unsigned Header Bypass in Presigned S3 Upload URLs PUBLISHED

Description (CNA)

Incus 7.0.0 before 7.0.2 and 7.1.0 before 7.5.0 contains a signature verification flaw in its built-in S3 server that allows presigned URL holders to inject unsigned x-amz-* headers. Attackers can add an unsigned X-Amz-Copy-Source header to a presigned upload URL to copy other bucket objects onto the granted key, disclosing their contents and ETags.

Affected (CNA)

Vendor / productVersions
lxc / incusaffected 7.0.0 before 7.0.2; unaffected 7.0.2; affected 7.1.0 before 7.5.0; unaffected 7.5.0

CWE

CWE-347

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.