CVE-2026-41861

MEDIUMPre-NVD 4.24.2
EchelonGraph scoreHIGH confidence

Score 4.2 from GitHub Security Advisory published 2026-08-07. a secondary CVSS source baseline 4.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.2EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.2Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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").

CVSS v3
4.2
EG Score
4.2(high)
EG Risk
19(Track)
EG Risk 19/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity42% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 18, 2026

Advisory Details (1)

Auto-updated Aug 6, 2026
No patch confirmed yet.
generic

CVE-2026-41861 - Arbitrary Root File Write via Path Traversal in BOSH agent | Cloud Foundry

https://www.cloudfoundry.org/blog/cve-2026-41861-arbitrary-root-file-write-via-path-traversal-in-bosh-agent/

Vendor Advisories for CVE-2026-41861(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 21× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-20 15:34 UTCEG score recompute
  2. 2026-08-20 15:34 UTCGHSA enrichment
  3. 2026-08-19 17:03 UTCEPSS rescore
  4. 2026-08-19 15:34 UTCGHSA enrichment
  5. 2026-08-18 15:34 UTCEG score recompute
  6. 2026-08-18 15:34 UTCGHSA enrichment
  7. 2026-08-18 13:48 UTCEPSS rescore
  8. 2026-08-18 01:54 UTCEG score recompute
  9. 2026-08-18 01:54 UTCGHSA enrichment
  10. 2026-08-17 13:47 UTCEPSS rescore
  11. 2026-08-17 01:57 UTCEG score recompute
  12. 2026-08-17 01:57 UTCGHSA enrichment
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 02:14 UTCEPSS rescore
  15. 2026-08-16 01:59 UTCGHSA enrichment
  16. 2026-08-15 02:00 UTCEG score recompute
  17. 2026-08-15 02:00 UTCGHSA enrichment
  18. 2026-08-15 01:30 UTCEPSS rescore
  19. 2026-08-14 02:02 UTCEG score recompute
  20. 2026-08-14 02:02 UTCGHSA enrichment
  21. 2026-08-13 22:00 UTCEPSS rescore
  22. 2026-08-13 02:04 UTCEG score recompute
  23. 2026-08-13 02:04 UTCGHSA enrichment
  24. 2026-08-12 13:51 UTCEPSS rescore
  25. 2026-08-12 02:07 UTCEG score recompute
Show 20 more
  1. 2026-08-12 02:07 UTCGHSA enrichment
  2. 2026-08-11 13:43 UTCEPSS rescore
  3. 2026-08-11 02:08 UTCEG score recompute
  4. 2026-08-11 02:08 UTCGHSA enrichment
  5. 2026-08-11 00:00 UTCEPSS rescore
  6. 2026-08-10 02:11 UTCEG score recompute
  7. 2026-08-10 02:11 UTCGHSA enrichment
  8. 2026-08-09 13:46 UTCEPSS rescore
  9. 2026-08-09 02:13 UTCEG score recompute
  10. 2026-08-09 02:13 UTCGHSA enrichment
  11. 2026-08-08 16:37 UTCEPSS rescore
  12. 2026-08-08 02:15 UTCEG score recompute
  13. 2026-08-08 02:15 UTCGHSA enrichment
  14. 2026-08-07 02:17 UTCEG score recompute
  15. 2026-08-07 02:17 UTCGHSA enrichment
  16. 2026-08-07 01:29 UTCEG score recompute
  17. 2026-08-07 01:29 UTCGHSA enrichment
  18. 2026-08-06 22:22 UTCEG score recompute
  19. 2026-08-06 22:16 UTCEG score recompute
  20. 2026-08-06 22:15 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-41861?
CVE-2026-41861 is a medium vulnerability published on August 6, 2026. 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…
When was CVE-2026-41861 disclosed?
CVE-2026-41861 was first published in the National Vulnerability Database on August 6, 2026, with the most recent update on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41861 actively exploited?
CVE-2026-41861 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 95.1% of all scored CVEs.
What is the CVSS score of CVE-2026-41861?
CVE-2026-41861 has a CVSS v3 base score of 4.2 (NVD).
How do I remediate CVE-2026-41861?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41861, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-41861

Explore →

Is Your Infrastructure Affected by CVE-2026-41861?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.