CVE-2026-88938Public exploitNetwork attack vector

Host source-file disclosure via unchecked path resolution

Published Sep 10, 2026 · Updated Sep 10, 2026

Path traversal in the code.find MCP tool in Knowns 0 through 0.33.0 allows remote authenticated users to read host source files. handleCodeFind passes the raw path to findCodeFiles, which accepts absolute paths or resolves traversal segments with filepath.Join without checking project-root containment. Any standard MCP permission preset, including read-only access, exposes recognized source files readable by the server process; file writes and service interruption are not reported.

CVSS severity8.3
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in the code.find MCP tool in Knowns 0 through 0.33.0 allows remote authenticated users to read host source files. handleCodeFind passes the raw path to findCodeFiles, which accepts absolute paths or resolves traversal segments with filepath.Join without checking project-root containment. Any standard MCP permission preset, including read-only access, exposes recognized source files readable by the server process; file writes and service interruption are not reported.

The record

CVE
CVE-2026-88938
Published
Sep 10, 2026
Updated
Sep 10, 2026
Vendor
Knowns
Product
Knowns
Classifications
CWE-284, CWE-22, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=0.33.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Knowns · Knownsversion=0 <=0.33.0

Published CVSS scores

8.3GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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