CVE-2026-41861CWE-22path-traversal

CVE-2026-41861

Medium · published August 7, 2026

CVSS v3.1
4.2
EPSS
0%
Percentile
11.0
In the wild
Unconfirmed
What it is

Path Traversal in BOSH-Ecosystem / BOSH allows an IaaS-metadata attacker to make the agent write a root-owned file with partially attacker-controlled body to any path ending in .network, and create any missing parent directories with mode 0777 via network Alias on Ubuntu.

Affected versions: BOSH agent < v2.847.0 (jammy <= v1.1202, or noble <= v1.364). Lower bound unspecified in advisory ("All bosh agent versions").

The record
Technical detail
CVSS v3.1
4.2 · MEDIUM
Vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00213 · 11.0th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-08-07T02:17Z
References (1)
https://www.cloudfoundry.org/blog/cve-2026-41861-arbitrary-root-file-write-via-path-traversal-in-bosh-agent/ · [email protected]
EPSS history
Timeline
  • 06 AUG 18:29Z
    Arbitrary Root File Write via Path Traversal in BOSH agent
    cvelistv5