Vulnerability details
CVE-2026-48753
lxc incus
Incus has an arbitrary file write via path traversal in S3 multipart upload
CVSS 3.1
9.9Critical
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.9Critical | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| lxc | incus | < 7.1.0 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://github.com/lxc/incus/security/advisories/GHSA-ccjc-4qc3-jxqc x_refsource_CONFIRM
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Details
- Published
- 2026-08-21
- Last updated
- 2026-08-21
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.73%
Probability of exploitation in 30 days
54.4%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-73External Control of File Name or Path