# CVE-2026-15505 — vnotex vnote

> As of 2026-07-12, CVE-2026-15505 is a LOW-severity vulnerability in vnotex vnote, CVSS v3.1 3.5, EPSS 0.1% (9.3th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-15505 as of 2026-07-12; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-07-12

## What is CVE-2026-15505?

A weakness has been identified in vnotex vnote up to 3.20.1. Impacted is an unknown function of the file /src/data/extra/web/js/markdownit.js of the component YAML Frontmatter. This manipulation of the argument p_metaData causes cross site scripting. The attack may be initiated remotely. The vendor was contacted early about this disclosure but did not respond in any way.

The record classifies CVE-2026-15505 under weakness classes [CWE-79](https://intel.threadlinqs.com/cwe/CWE-79), [CWE-94](https://intel.threadlinqs.com/cwe/CWE-94). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs a user to take an action first. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 85 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 3.5 — LOW (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R`)
- **CVSS v4.0 base score:** 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P`)
- **EPSS (FIRST):** 0.1% probability of exploitation in the next 30 days, higher than 9.3% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 2.1/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-07-12

## Is CVE-2026-15505 being exploited?

It currently carries a trending score of 32 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **vnotex**: vnote

## How to fix CVE-2026-15505

No vendor patch reference has been recorded for CVE-2026-15505 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-2026-15505

No threat campaign in the Threadlinqs corpus currently references CVE-2026-15505, 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, GitHub Security Advisories, FIRST EPSS. Last verified by Threadlinqs on 2026-07-14.

**Technical analysis**

- [vuldb.com — vdb entry](https://vuldb.com/vuln/377834)

**Third-party advisory**

- [vuldb.com — signature](https://vuldb.com/vuln/377834/cti)
- [vuldb.com — third party advisory](https://vuldb.com/cve/CVE-2026-15505)
- [vuldb.com — third party advisory (844847)](https://vuldb.com/submit/844847)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-15505
Full detection coverage and IOCs for threats exploiting CVE-2026-15505 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp