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    CVE-2026-115374

    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.

    Published:Oct 22, 2026
    Last Modified:Oct 23, 2026
    EPS:Oct 22, 2026
    EPSS Score:0.00153
    CVSS Score:7.1

    Affected Products

    Vendor
    Linuxcontainers
    Product
    Incus

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-463 Padding Oracle Crypto Attack
    CAPEC-475 Signature Spoofing by Improper Validation

    Related CVEs

    CVE-2026-115378 (CVSS 6.9) — Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write vulnerability …
    CVE-2026-115377 (CVSS 9.4) — Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write vulnerability …
    CVE-2026-115376 (CVSS 8.3) — Incus 7.0.1 before 7.0.2 and 7.2.0 before 7.5.0 contains an authorization bypass vulnerability that allows pro…
    CVE-2026-115375 (CVSS 9.4) — Incus 7.0.0 before 7.0.2 and 7.1.0 before 7.5.0 contains a path traversal vulnerability that allows clients ab…
    CVE-2026-115373 (CVSS 7) — Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains a missing authorization vulnerability …
    CVE-2026-115372 (CVSS 9) — Incus from 7.3.0 before 7.5.0 contains a project restriction bypass that allows restricted project users to se…
    CVE-2026-115371 (CVSS 7.1) — Incus 6.0.3 before 6.0.7, 6.6.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an improper authorization vulner…
    CVE-2026-115370 (CVSS 5.3) — Incus 6.0.5 before 6.0.7, 6.12.0 before 7.0.2, and 7.1.0 before 7.5.0 contains a restriction bypass vulnerabil…
    CVE-2026-41685 (CVSS 4.3) — Incus is a system container and virtual machine manager. Prior to version 7.0.0, uploads of large amount of da…
    CVE-2026-41684 (CVSS 6.5) — Incus is a system container and virtual machine manager. Prior to version 7.0.0, backup.GetInfo() trusts the i…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High