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CVE-2026-73848— Emlog: Stored XSS via Tag Name in Article Editor

Quick assessment

Affected

emlog emlog

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Emlog 是一个开源的网站构建系统。在 2.6.29 及更早版本中，emlog 中的标签名称在文章编辑器中渲染时未经过 HTML 编码。攻击者可以创建一个包含的标签。函数不会转义 HTML 实体，因此单引号被原样存储。当浏览器渲染页面时，它会先将解码为字面单引号，然后在执行 JavaScript 时，这会打破字符串结构，从而允许执行任意代码。截至发布公告时，尚未有公开已知的补丁。

CVSS 6.9 · Medium Updated Sep 05, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

Vendor	Product	Version Range	Status
emlog	emlog	`<= 2.6.29`	affected

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Vulnerability Information

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Vulnerability Title

Emlog: Stored XSS via Tag Name in Article Editor

Source: CVE Program / CVE List V5

Vulnerability Description

Emlog is an open source website building system. In versions 2.6.29 and prior, tag names in emlog are not HTML-encoded when rendered in the article editor. An attacker can create a tag containing ');alert(document.domain);//. The addslashes() function does not escape HTML entities, so ' is stored as-is. When the browser renders the page, it decodes ' back to a literal single quote before evaluating the JavaScript, breaking out of the string and executing arbitrary code. At time of publication, there are no publicly known patches.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Source: CVE Program / CVE List V5

Vulnerability Type

在Web页面生成时对输入的转义处理不恰当(跨站脚本)

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
emlog	emlog	<= 2.6.29	-

II. Public POCs for CVE-2026-73848

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-73848

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Vendor Advisories for CVE-2026-73848 (1)

🔗 Stored XSS via Tag Name in Article Editor · Advisory · emlog/emlog · GitHub Read full article x_refsource_CONFIRM

https://www.cve.org/CVERecord?id=CVE-2026-73848

Same Patch Batch · emlog · 2026-09-04 · 4 CVEs total

CVE-2026-53758	8.7 HIGH	Emlog: Stored XSS via Parsedown Markdown Processing - Raw HTML Not Sanitized
CVE-2026-53757	6.9 MEDIUM	Emlog: Zip Slip Path Traversal in Plugin/Template ZIP Upload Enables RCE
CVE-2026-53756	4.9 MEDIUM	Emlog Blind SQL Injection via Authentication Cookie

IV. Related Vulnerabilities

Same product: emlog

Same vendor: emlog

Same weakness: CWE-79

V. Comments for CVE-2026-73848

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Goal Reached Thanks to every supporter — we hit 100%!

CVE-2026-73848— Emlog: Stored XSS via Tag Name in Article Editor

Quick assessment

Possible ATT&CK Techniques 1 AI

Affected Version Matrix 1

I. Basic Information for CVE-2026-73848

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2026-73848

III. Intelligence Information for CVE-2026-73848

Vendor Advisories for CVE-2026-73848 (1)

Same Patch Batch · emlog · 2026-09-04 · 4 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2026-73848

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