CVE-2026-57442CWE-22CWE-538path-traversal

CVE-2026-57442

published September 15, 2026

CVSS
6.9
EPSS
0%
Percentile
8.4
In the wild
Unconfirmed
What it is

MCPVault is a lightweight Model Context Protocol server for safe access to files in an Obsidian vault. Prior to 0.11.5, PathFilter in src/pathfilter.ts uses root-anchored deny-list patterns, so nested .git, .obsidian, and node_modules path segments do not match the restriction and pass both isAllowed() and isAllowedForListing(). An attacker who influences a path selected by an AI agent can traverse nested repository or Obsidian metadata, read remote URLs or embedded tokens, or cause nested node_modules content to pollute the listAllTags index. This issue is fixed in version 0.11.5.

The record
Technical detail
CVSS
6.9 · NONE
CVSS v4.0
6.9 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS
0.00192 · 8.4th percentile
Weaknesses
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'); CWE-538 · Insertion of Sensitive Information into Externally-Accessible File or Directory
Published
2026-09-15T22:17Z
References (5)
EPSS history
Timeline
  • 17 SEP 03:31Z
    EPSS moved — → 0%
    epss
  • 15 SEP 17:50Z
    MCPVault: PathFilter restricted directories (.git/.obsidian/node_modules) only denied at vault root, not nested
    cvelistv5