CVE-2026-57441

HIGHPre-NVD 8.48.4
EchelonGraph scoreLOW confidence

This high-severity CVE scores 8.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: secondary
Trending — 3 sources updated this week
8.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.4Exploit: None knownExposed: 0

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

MCPVault is a lightweight Model Context Protocol server for safe access to files in an Obsidian vault. Prior to 0.11.4, PathFilter in src/pathfilter.ts compiles restricted-directory patterns case-sensitively and compares paths without canonicalizing filesystem-equivalent segment names. On case-insensitive macOS and Windows filesystems, case variants of .git, .obsidian, or node_modules pass both isAllowed() and isAllowedForListing() even though the operating system opens the restricted directory, and Windows trailing dots or spaces provide the same bypass. An attacker who influences a path selected by an AI agent can use the bypass in read, write, move, search, or listing operations to expose or modify sensitive repository and Obsidian metadata. Vault-root .. containment is not affected. This issue is fixed in version 0.11.4.

CVSS v3
8.4
EG Score
8.4(low)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity84% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

June 18, 2026

Last Modified

September 15, 2026

Advisory Details (3)

Auto-updated Sep 15, 2026
Patch available. Sources: github, github_commit.
github_commit

commit b9ea91a1c6d6 (bitbonsai/mcpvault)

Fix landed in bitbonsai/mcpvault commit b9ea91a1c6d6 — awaiting tagged release

https://github.com/bitbonsai/mcpvault/commit/b9ea91a1c6d6adfec3e9e0483d9d79669e927fa8
github_commit

commit 0adb43901e1a (bitbonsai/mcpvault)

Fix landed in bitbonsai/mcpvault commit 0adb43901e1a — awaiting tagged release

https://github.com/bitbonsai/mcpvault/commit/0adb43901e1a08e85e14b42a8df2442fabc0b64a
github Patch Available

PathFilter restricted-directory deny-list bypass via case and trailing dot/space equivalence · Advisory · bitbonsai/mcpvault · GitHub

Affected: 0.11.4 by case-insensitive matching plus per-segment canonicalization before the

https://github.com/bitbonsai/mcpvault/security/advisories/GHSA-j99q-93c9-h869

Vendor Advisories for CVE-2026-57441(1)

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

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
@bitbonsai/mcpvault—0.11.4—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 8× 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. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-17 19:31 UTCEPSS rescore
  3. 2026-09-16 14:08 UTCEPSS rescore
  4. 2026-09-15 20:47 UTCEG score recompute
  5. 2026-09-15 19:50 UTCEG score recompute
  6. 2026-09-15 18:37 UTCEG score recompute
  7. 2026-09-15 17:58 UTCEG score recompute▲ 8.40
  8. 2026-09-15 17:57 UTCMITRE cvelistV5CVSS v3 → 8.4 · CVSS v4 → 8.4 · severity → HIGH
  9. 2026-08-02 07:40 UTCEG score recompute
  10. 2026-07-26 17:44 UTCEG score recompute
  11. 2026-07-23 03:20 UTCEG score recompute
  12. 2026-07-20 21:35 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-57441?
CVE-2026-57441 is a high vulnerability published on June 18, 2026. MCPVault is a lightweight Model Context Protocol server for safe access to files in an Obsidian vault. Prior to 0.11.4, PathFilter in src/pathfilter.ts compiles restricted-directory patterns case-sensitively and compares paths without canonicalizing filesystem-equivalent segment names. On…
When was CVE-2026-57441 disclosed?
CVE-2026-57441 was first published in the National Vulnerability Database on June 18, 2026, with the most recent update on September 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57441 actively exploited?
CVE-2026-57441 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 92.9% of all scored CVEs.
What is the CVSS score of CVE-2026-57441?
CVE-2026-57441 has a CVSS v3 base score of 8.4 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-57441?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57441, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-57441

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