CVE-2026-53758: high-severity vulnerability in emlog
Emlog: Stored XSS via Parsedown Markdown Processing - Raw HTML Not Sanitized
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.4%
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.
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
Affected products
emlog · emlogRelated CVEs — emlog
In the same product, most dangerous first.
CVE-2026-34607HIGHEmlog: Path Traversal in emUnZip() allows arbitrary file write leading to RCEEPSS 0.9%CVE-2025-47785HIGHEMLOG SQL Injection VulnerabilityEPSS 0.8%CVE-2025-47787HIGHEmlog Pro Contains a File Upload VulnerabilityEPSS 0.8%CVE-2026-22799CRITICALemlog Arbitrary File Upload VulnerabilityEPSS 0.7%CVE-2026-73849CRITICALemlog allows unauthenticated reinstallation via `install.php?action=reinstall`.EPSS 0.7%CVE-2025-30372HIGHEmlog Pro contains an SQL injection vulnerability.EPSS 0.6%