Arbitrary Root File Write via Path Traversal in BOSH agent
Priority LOW 19CWE-22Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
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").
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00213 11th percentileScored 2026-11-07
Fix Fixed BOSH (CloudFoundry Foundation): 2.847.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| CloudFoundry Foundation | BOSH | before 2.847.0 | 2.847.0 | Patch available | CNA |
- BOSH VendorCloudFoundry Foundation Affected before 2.847.0 Fixed in 2.847.0 Patch available CNA
Remediation
- Fix · CNA BOSH (CloudFoundry Foundation) Fixed in 2.847.0
Timeline
- 2026-10-02 Threatist record created from CVE-2026-41861
- 2026-10-03 Alias added: GHSA-hr6c-84vf-jf53
References
More CloudFoundry Foundation vulnerabilities
- TI-2018-15273 Path traversal in code.cloudfoundry.org/archiver CVSS 3.1CRITICAL 9.1
- TI-2016-05702 Command injection in Cloud Foundry CVSS 3.0CRITICAL 9.8
- TI-2022-13629 Improper certificate validation in Cloud Foundry Diego and CF Deployment CVSS 3.1CRITICAL 9.1
- TI-2016-06771 Improper input validation in Cloud Foundry CVSS 3.0CRITICAL 9.8
- TI-2016-00680 Cloud Foundry Garden-Linux versions prior to v0.333.0 and Elastic Runtime 1.6.x version… CVSS 3.1CRITICAL 9.8
- TI-2017-03116 Improper privilege management in Cloud Foundry CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-41861 · CVE Program
- CVE-2026-41861 · NVD
- FIRST EPSS
- GHSA-hr6c-84vf-jf53 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences