---
id: CVE-2026-53758
title: Emlog is an open source website building system
summary: >-
  Emlog is an open source website building system. In versions 2.6.29 and prior,
  article content is processed by Parsedown without enabling safe mode, which
  means raw HTML including <script> tags embedded in Markdown is passed through
  unes…
severity: high
cvss: 8.7
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'
cwe:
  - CWE-79
vendor: emlog
product: emlog
affected:
  - emlog <= 2.6.29
published: '2026-09-04'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T18:16:59.010'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-53758'
references:
  - url: 'https://github.com/emlog/emlog/security/advisories/GHSA-35vc-2gv4-mw77'
    label: security-advisories@github.com
  - url: 'https://github.com/emlog/emlog/security/advisories/GHSA-35vc-2gv4-mw77'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-09T17:38:20.404338Z'
cvssSource: cna
epss: 0.00436
epssPercentile: 0.35236
ingestedAt: '2026-09-08T21:11:12.295Z'
---

## Overview

Emlog is an open source website building system. In versions 2.6.29 and prior, article content is processed by Parsedown without enabling safe mode, which means raw HTML including <script> tags embedded in Markdown is passed through unescaped. The output is rendered with no additional sanitization, resulting in stored XSS visible to all site visitors. At time of publication, there are no publicly known patches.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.