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The `cve-search_mcp` repository by `damian1751` serves as an integration layer for querying vulnerability data through the Model Context Protocol (MCP), bridging AI assistant tools with CVE databases. In versions prior to v1.5.350, the application suffered from an improper input validation flaw within its query processing routines. When a client or user agent supplied maliciously crafted strings designed to target API parameters or endpoint requests, the server failed to correctly sanitize the input data. This absence of strict validation allowed unexpected payloads to traverse deep into backend requests, potentially enabling attackers to manipulate data flow, trigger unauthorized queries, or cause application-level denial of service conditions by abusing the cache and search layers. The of input validation checks and improved exit codes in subsequent updates patched these gaps, ensuring robust request sanitization and secure error handling across client interactions.
DailyCVE Form:
Platform: cve-search_mcp
Version: v1.5.350
Vulnerability : Input Validation
Severity: Critical
date: 2026-03-15
Prediction: 2026-03-20
What Undercode Say:
git clone https://github.com/damian1751/cve-search_mcp.git cd cve-search_mcp pip install --upgrade -r requirements.txt python main.py
Unsafe request parameter parsing before input validation patch
def query_vulnerability(param):
response = requests.get(f"https://cve.circl.lu/api/cve/{param}")
return response.json()
How Exploit: (Educational Purposes!)
import requests
Simulating input validation bypass using unvalidated parameter injection
malicious_payload = "../../api/admin/dump"
url = f"http://localhost:8000/cve/{malicious_payload}"
response = requests.get(url)
print(response.text)
Protection: from this CVE
Upgrade `cve-search_mcp` to version 1.6.0.139 or later.
Implement strict regex or type-checking for all incoming parameters before passing them to API queries.
Enable logging and monitoring to catch unusual parameter structures and cache anomalies.
Impact:
Attackers can exploit input validation deficiencies to manipulate downstream API queries, inject arbitrary parameters, exhaust system caching layers, or trigger unexpected application crashes, compromising the integrity of the vulnerability intelligence workflow.
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Sources:
Reported By: github.com
Extra Source Hub:
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