CVE-2026-21429— Emlog has Broken Access Control (BAC)
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emlog开源的一套基于PHP和MySQL的CMS建站系统。 emlog 2.5.23版本存在安全漏洞，该漏洞源于管理员可设置控制项，可能导致用户发布文章后无法编辑或删除。
Possible ATT&CK Techniques 1 AI
T1078 · Valid Accounts
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I. Basic Information for CVE-2026-21429
Vulnerability Information
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Vulnerability Title
Emlog has Broken Access Control (BAC)
Source: CVE Program / CVE List V5
Vulnerability Description
Emlog is an open source website building system. In version 2.5.23, the admin can set controls which makes users unable to edit or delete their articles after publishing them. As of time of publication, no known patched versions are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
emlog 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
emlog是emlog开源的一套基于PHP和MySQL的CMS建站系统。 emlog 2.5.23版本存在安全漏洞，该漏洞源于管理员可设置控制项，可能导致用户发布文章后无法编辑或删除。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-21429
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-21429 (1)
-
https://github.com/emlog/emlog/security/advisories/GHSA-jw5v-2g53-rx8w x_refsource_CONFIRM
Same Patch Batch · emlog · 2026-01-02 · 5 CVEs total
| CVE-2026-21433 | 7.7 HIGH | Emlog vulnerable to Server-Side Request Forgery (SSRF) |
| CVE-2026-21430 | Emlog: CSRF chained with stored XSS leads to ATO | |
| CVE-2026-21431 | Emlog vulnerable to stored Cross-site Scripting via image name | |
| CVE-2026-21432 | Emlog has stored Cross-site Scripting issue that can lead to admin or another account ATO |
IV. Related Vulnerabilities
Same product: emlog
-
CVE-2026-73848
Emlog: Stored XSS via Tag Name in Article Editor -
CVE-2026-53757
Emlog: Zip Slip Path Traversal in Plugin/Template ZIP Upload -
CVE-2026-53758
Emlog: Stored XSS via Parsedown Markdown Processing - Raw HT -
CVE-2026-53756
Emlog Blind SQL Injection via Authentication Cookie -
CVE-2026-73850
Emlog: Arbitrary SQL Execution Vulnerability in ai.php withi
Same vendor: emlog
-
CVE-2026-73848
Emlog: Stored XSS via Tag Name in Article Editor -
CVE-2026-53757
Emlog: Zip Slip Path Traversal in Plugin/Template ZIP Upload -
CVE-2026-53758
Emlog: Stored XSS via Parsedown Markdown Processing - Raw HT -
CVE-2026-53756
Emlog Blind SQL Injection via Authentication Cookie -
CVE-2026-73850
Emlog: Arbitrary SQL Execution Vulnerability in ai.php withi
Same weakness: CWE-862
-
CVE-2026-11601
WPCafe <= 3.0.19 - Missing Authorization to Unauthenticated -
CVE-2026-94505
Nelio Content <= 4.5.0 - Missing Authorization to Authentica -
CVE-2026-101923
Photo Reviews for WooCommerce <= 1.2.30 - Missing Authorizat -
CVE-2026-97337
Simple Membership <= 4.8.3 - Missing Authorization to Unauth -
CVE-2026-91108
Alt Text AI <= 1.10.41 - Missing Authorization to Authentica
V. Comments for CVE-2026-21429
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