CVE-2026-53758 Details
Description
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.
A stored cross-site scripting vulnerability has been identified in Emlog versions through 2.6.29. The issue arises because article content is processed by Parsedown without enabling safe mode, allowing raw HTML, including script tags, to be passed through unescaped. This unfiltered output is rendered without additional sanitization, resulting in stored XSS that is visible to all site visitors. The vulnerability can be exploited by embedding a script payload in an article, which is then executed when the article is viewed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 4, 2026CISA-ADP
Assessed Sep 9, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/emlog/emlog/security/advisories/GHSA-35vc-2gv4-mw77 | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/emlog/emlog/security/advisories/GHSA-35vc-2gv4-mw77 | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Emlog | <= 99.99.99 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 9, 2026 | CVE Modified | CISA-ADP |
| Sep 4, 2026 | New CVE Received | [email protected] |