UBUNTU-CVE-2026-115374

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Source
https://ubuntu.com/security/CVE-2026-115374
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115374.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-115374
Upstream
Published
2026-10-26T00:00:00Z
Modified
2026-10-27T04:17:46Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N CVSS Calculator
  • 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:Pro:24.04:LTS / incus

Package

Name
incus
Purl
pkg:deb/ubuntu/incus?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.4-1ubuntu1
0.5.1-1
0.5.1-3
0.6-1
6.*
6.0.0-1
6.0.0-1ubuntu0.1
6.0.0-1ubuntu0.2
6.0.0-1ubuntu0.2+esm1
6.0.0-1ubuntu0.3
6.0.0-1ubuntu0.3+esm1
6.0.0-1ubuntu0.3+esm2
6.0.0-1ubuntu0.3+esm3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-github-lxc-incus-dev",
            "binary_version":  "6.0.0-1ubuntu0.3+esm3"
        },
        {
            "binary_name":  "incus",
            "binary_version":  "6.0.0-1ubuntu0.3+esm3"
        },
        {
            "binary_name":  "incus-agent",
            "binary_version":  "6.0.0-1ubuntu0.3+esm3"
        },
        {
            "binary_name":  "incus-client",
            "binary_version":  "6.0.0-1ubuntu0.3+esm3"
        },
        {
            "binary_name":  "incus-migrate",
            "binary_version":  "6.0.0-1ubuntu0.3+esm3"
        },
        {
            "binary_name":  "incus-tools",
            "binary_version":  "6.0.0-1ubuntu0.3+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115374.json"

Ubuntu:26.10 / incus

Package

Name
incus
Purl
pkg:deb/ubuntu/incus?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

6.*
6.0.5-8
7.*
7.0.1-5

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-github-lxc-incus-dev",
            "binary_version":  "7.0.1-5"
        },
        {
            "binary_name":  "incus",
            "binary_version":  "7.0.1-5"
        },
        {
            "binary_name":  "incus-agent",
            "binary_version":  "7.0.1-5"
        },
        {
            "binary_name":  "incus-base",
            "binary_version":  "7.0.1-5"
        },
        {
            "binary_name":  "incus-client",
            "binary_version":  "7.0.1-5"
        },
        {
            "binary_name":  "incus-extra",
            "binary_version":  "7.0.1-5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115374.json"

Ubuntu:Pro:26.04:LTS / incus

Package

Name
incus
Purl
pkg:deb/ubuntu/incus?arch=source&distro=esm-apps%2Fresolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

6.*
6.0.4-2
6.0.5-8
6.0.5-8ubuntu0.26.04.1~esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-github-lxc-incus-dev",
            "binary_version":  "6.0.5-8ubuntu0.26.04.1~esm1"
        },
        {
            "binary_name":  "incus",
            "binary_version":  "6.0.5-8ubuntu0.26.04.1~esm1"
        },
        {
            "binary_name":  "incus-agent",
            "binary_version":  "6.0.5-8ubuntu0.26.04.1~esm1"
        },
        {
            "binary_name":  "incus-base",
            "binary_version":  "6.0.5-8ubuntu0.26.04.1~esm1"
        },
        {
            "binary_name":  "incus-client",
            "binary_version":  "6.0.5-8ubuntu0.26.04.1~esm1"
        },
        {
            "binary_name":  "incus-extra",
            "binary_version":  "6.0.5-8ubuntu0.26.04.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115374.json"