9.9

CVE-2026-48753: lxc incus External Control of File Name or Path

CVSS: 9.9v3.1CriticalDeferred
AliasesUBUNTU-CVE-2026-48753DEBIAN-CVE-2026-48753GHSA-ccjc-4qc3-jxqc
Published 21-08-2026Last modified 21-08-2026
Open JSON

Vulnerability summary

CVE-2026-48753 is a critical (CVSS 9.9) External Control of File Name or Path vulnerability in lxc incus. EPSS estimates a 0.73% chance of exploitation in the next 30 days, higher than 53.5% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.9/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.73%
0%100%
Low · -0.14 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:11651-1OPENSUSE-SU-2026:21483-1

Timeline

  1. 21-08-2026
    PublishedVulnerability first disclosed.
  2. 21-08-2026
    Last modifiedVulnerability information updated.

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 metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.73%

Chance of exploitation in the next 30 days

Percentile

54%

Versus all other CVEs

30-day change

-0.14 pp

From 0.87% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.73%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Github.com/lxc/incus2 products
  • v6All versions (No fix recorded)
  • v7< 7.1.0
Debian1 product
  • incus< 7.0.0-2
Github.com/lxc1 product
  • incusAll versions (No fix recorded)
Github.com/lxc/incus/v7/cmd1 product
  • incusd< 7.1.0
Lxc1 product
Ubuntu1 product
  • incusAll versions (No fix recorded)

6 vendors · 7 products

References

6 links