What’s Vulnerable › Vulnerabilities

CVE-2026-48753: Incus has an arbitrary file write via path traversal in S3 multipart upload

• Severity: critical (CVSS 9.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-21 · updated 2026-10-15
• Weakness: CWE-73

Description

Incus is a system container and virtual machine manager. Prior to version 7.1.0, the S3 protocol upload endpoint is vulnerable to path traversal and allows creation of arbitrary files on the host. This behavior could lead to arbitrary command execution. Version 7.1.0 fixes the issue.

Affected products

• lxc incus: before 7.1.0

References

• https://github.com/lxc/incus/security/advisories/GHSA-ccjc-4qc3-jxqc
• https://github.com/lxc/incus/security/advisories/GHSA-ccjc-4qc3-jxqc

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