CVE-2026-88938CWE-22path-traversal

CVE-2026-88938

Medium · published September 10, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
40.5
In the wild
Unconfirmed
What it is

knowns through 0.33.0 fails to confine the path argument of the code.find MCP tool to the project root, allowing AI agent sessions to read source files anywhere on the host. Attackers can supply absolute paths or relative traversal sequences to the path argument and retrieve full file contents from outside the intended project directory.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
7.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00481 · 40.5th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-09-10T20:18Z
References (5)
https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/mcp/handlers/code.go#L1293-L1354 · [email protected]https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/mcp/handlers/code.go#L873-L902 · [email protected]https://github.com/knowns-dev/knowns/security/advisories/GHSA-5cj9-fcqq-g2h7 · [email protected]https://www.vulncheck.com/advisories/knowns-through-0.33.0-path-traversal-via-code-find-mcp-tool · [email protected]https://github.com/knowns-dev/knowns/security/advisories/GHSA-5cj9-fcqq-g2h7 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 12 SEP 03:22Z
    EPSS moved — → 0%
    epss
  • 10 SEP 15:28Z
    knowns through 0.33.0 Path Traversal via code.find MCP tool
    cvelistv5