What’s Vulnerable › Vulnerabilities
CVE-2026-41861: Arbitrary Root File Write via Path Traversal in BOSH agent
- Severity: medium (CVSS 4.2 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-06 · updated 2026-10-23
- Weakness: CWE-22
Description
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").
Affected products
- CloudFoundry Foundation BOSH: before 2.847.0 — fixed in 2.847.0
How to fix
Upgrade to a fixed version: CloudFoundry Foundation BOSH 2.847.0. Check the vendor advisory for mitigations.
References
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