# CVE-2026-19753 — Model Context Protocol mcp-rdf-explorer

> As of 2026-08-14, CVE-2026-19753 is a HIGH-severity vulnerability in Model Context Protocol mcp-rdf-explorer, CVSS v3.1 7.3, EPSS 0.2% (20.3th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-19753 as of 2026-08-14; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-14

## What is CVE-2026-19753?

A vulnerability was detected in Model Context Protocol mcp-rdf-explorer 1.0.0. Affected is the function explore_url of the file src/mcp-rdf-explorer/server.py of the component MCP Server. Performing a manipulation of the argument url results in server-side request forgery. The attack may be initiated remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

The record classifies CVE-2026-19753 under weakness class [CWE-918](https://intel.threadlinqs.com/cwe/CWE-918). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 53 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.3 — HIGH (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R`)
- **CVSS v4.0 base score:** 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 20.3% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.5/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-13, last modified 2026-08-14

## Is CVE-2026-19753 being exploited?

It currently carries a trending score of 35 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **Model Context Protocol**: mcp-rdf-explorer

## How to fix CVE-2026-19753

No vendor patch reference has been recorded for CVE-2026-19753 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-19753

No threat campaign in the Threadlinqs corpus currently references CVE-2026-19753, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-08-15.

**Exploit and proof of concept**

- [github.com — exploit](https://github.com/emekaokoye/mcp-rdf-explorer/issues/3)

**Technical analysis**

- [vuldb.com — vdb entry](https://vuldb.com/vuln/389554)

**Third-party advisory**

- [vuldb.com — signature](https://vuldb.com/vuln/389554/cti)
- [vuldb.com — third party advisory](https://vuldb.com/cve/CVE-2026-19753)
- [vuldb.com — third party advisory (868954)](https://vuldb.com/submit/868954)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-19753
Full detection coverage and IOCs for threats exploiting CVE-2026-19753 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp