VulnerabilityPublished 6 Aug 2026

CVE-2026-19046: NocteDefensor LudusMCP · Path Traversal

Affects NocteDefensor LudusMCPSource CVE Database V5

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Not known to be exploited · CVSS 4.8 Medium.

Data as of 5 Nov 2026, 00:01 UTC

CVSS 4.0 base score

4.8Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X

Attack Vector: Local
Attack Complexity: Low
Attack Requirements: None
Privileges Required: Low
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: None
Vulnerable system availability: None
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Local: The vulnerable system is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or through terminal emulation (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., using social engineering techniques to trick a legitimate user into opening a malicious document).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the Vulnerable System.
Vulnerable system integrity: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 6 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
NocteDefensorLudusMCP	Affected 1.0.0 – 1.0.24 25 affected builds	Fixed in–
GitHubnoctedefensor/LudusMCP`pkg:github/noctedefensor/LudusMCP`Other threats	Affected 1.0.0 – 1.0.24 25 affected builds	Fixed in–

CPE configurations (1)

cpe:2.3:a:noctedefensor:ludusmcp:*:*:*:*:*:*:*:*

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AI-suggested

Since the vendor has not responded or released a fix, users should restrict local access to trusted users only and monitor for any suspicious activity related to the affected component until an official patch is available.

Description

CVE-2026-19046 is a path traversal vulnerability in NocteDefensor LudusMCP affecting versions up to 1.0.24. The flaw exists in an unknown function within the src/tools/ludusEnvironmentGuidesSearch.ts file, specifically in the ludus_environment_guides_search component. Exploitation requires local access and involves manipulation of the guide_name argument to perform path traversal. The vendor has not yet responded or issued a fix for this vulnerability.

Impact

An attacker with local access can exploit this vulnerability to perform path traversal, potentially accessing or manipulating files outside the intended scope. This could lead to unauthorized information disclosure or modification of files on the affected system. The impact is limited by the requirement for local access and the lack of known exploits in the wild.

Summary

This vulnerability in NocteDefensor LudusMCP (up to version 1.0.24) allows an attacker with local access to manipulate the guide_name argument in a function within src/tools/ludusEnvironmentGuidesSearch.ts, leading to path traversal. This could potentially allow unauthorized access to files outside the intended directory structure. The issue was reported early to the project, but no remediation or patch has been released to date.

References

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