CVE-2026-14699

Local file disclosure via symlinked allowlist path

Published Jul 5, 2026 · Updated Jul 5, 2026

Symlink following in Markdownify MCP Server 1.0 and 1.1.0 allows local users to read files outside configured path allowlists. The assertPathAllowed and isWithinDirectory helpers compare normalized path strings with startsWith without resolving symlink targets, after which file reads and conversions follow the accepted symlink. The bypass requires MD_ALLOWED_PATHS or MD_SHARE_DIR plus an attacker-influenced path inside an allowed directory, and access remains limited by server-process file permissions.

CVSS severity4.8
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Symlink following in Markdownify MCP Server 1.0 and 1.1.0 allows local users to read files outside configured path allowlists. The assertPathAllowed and isWithinDirectory helpers compare normalized path strings with startsWith without resolving symlink targets, after which file reads and conversions follow the accepted symlink. The bypass requires MD_ALLOWED_PATHS or MD_SHARE_DIR plus an attacker-influenced path inside an allowed directory, and access remains limited by server-process file permissions.

The record

CVE
CVE-2026-14699
Published
Jul 5, 2026
Updated
Jul 5, 2026
Vendor
Zach Caceres
Product
Markdownify MCP Server
Classifications
CWE-61, CWE-59, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=1.0
  2. Affected versionversion=1.1.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Zach Caceres · Markdownify MCP Serverversion=1.0; version=1.1.0

Published CVSS scores

3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
1.7VulDBAV:L/AC:L/Au:S/C:P/I:N/A:N
4.8VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-61UNIX Symbolic Link (Symlink) Following
CWE-59Improper Link Resolution Before File Access ('Link Following')
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo