CVE-2026-115374 Incus - Authentication Bypass

Incus 7.0.0 < 7.0.2 and 7.1.0 < 7.5.0 contain a signature verification flaw in the built-in S3 server allowing presigned URL holders to inject unsigned x-amz-* headers, letting attackers disclose contents and ETags by copying bucket objects, exploit requires presigned URL access.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Published
22 October 2026
Updated
23 October 2026
Weakness
CWE-347

Vendor fix

Upgrade to version 7.0.2, 7.5.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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