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CVE-2026-41685— Incus: Unbounded binary import disk exhaustion

Quick assessment

Affected
lxc incus
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Incus是LXC开源的一个系统容器和虚拟机管理器。 Incus 7.0.0之前版本存在安全漏洞，该漏洞源于大量数据上传可能导致磁盘空间耗尽，从而影响主机系统。

CVSS 4.3 · Medium EPSS 0.39% · P31

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
lxc incus < 7.0.0 affected
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I. Basic Information for CVE-2026-41685

Vulnerability Information
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Vulnerability Title
Incus: Unbounded binary import disk exhaustion
Source: CVE Program / CVE List V5
Vulnerability Description
Incus is a system container and virtual machine manager. Prior to version 7.0.0, uploads of large amount of data by authenticated users can run the Incus server out of disk space, potentially taking down the host system. The impact here is limited for anyone using storage.images_volume and storage.backups_volume as those users will have large uploads be stored on those volumes rather than directly on the host filesystem. This is the default behavior on IncusOS. This issue has been patched in version 7.0.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Incus 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Incus是LXC开源的一个系统容器和虚拟机管理器。 Incus 7.0.0之前版本存在安全漏洞，该漏洞源于大量数据上传可能导致磁盘空间耗尽，从而影响主机系统。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
lxc incus < 7.0.0 -

II. Public POCs for CVE-2026-41685

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III. Intelligence Information for CVE-2026-41685

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Vendor Advisories for CVE-2026-41685 (1)

Vendor Pages for CVE-2026-41685 (1)

Same Patch Batch · lxc · 2026-05-07 · 4 CVEs total

CVE-2026-41684 6.5 MEDIUM Incus: Nil Dereferences on Restore via Malformed YAML
CVE-2026-41647 6.5 MEDIUM Incus: Nil-Pointer Dereference via S3 Bucket Import
CVE-2026-41648 Incus: Unbounded YAML Metadata Decode via Parsing

IV. Related Vulnerabilities

Same product: incus
Same vendor: lxc
Same weakness: CWE-770

V. Comments for CVE-2026-41685

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