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CVE-2026-43934— e107: Broken Access Control in e107 comment edit allows cross-user comment modification

Quick assessment

Affected
e107inc e107
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.

e107是E107团队的一套开源、免费且基于PHP和MySQL的内容管理系统（CMS）。该系统支持多种插件和外观主题，可作为个人博客、讨论社区、档案资料库等。 e107 2.3.4之前版本存在安全漏洞，该漏洞源于访问控制失效，应用程序仅依赖请求中的可预测标识符确定要编辑的评论而未确认用户所有权，可能导致未经授权的经过身份验证的用户编辑他人发布的评论。

CVSS 6.5 · Medium EPSS 0.31% · P22

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
e107inc e107 < 2.3.4 affected
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I. Basic Information for CVE-2026-43934

Vulnerability Information
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Vulnerability Title
e107: Broken Access Control in e107 comment edit allows cross-user comment modification
Source: CVE Program / CVE List V5
Vulnerability Description
e107 is a content management system (CMS). Prior to 2.3.4, a Broken Access Control vulnerability exists in the application, allowing an unauthorized authenticated user to edit comments posted by others. This stems from inadequate server-side access control validation, where the application depends only on a predictable identifier in the request to determine which comment to edit, without confirming the requesting user’s ownership of the comment. This vulnerability is fixed in 2.3.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
e107 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
e107是E107团队的一套开源、免费且基于PHP和MySQL的内容管理系统（CMS）。该系统支持多种插件和外观主题，可作为个人博客、讨论社区、档案资料库等。 e107 2.3.4之前版本存在安全漏洞，该漏洞源于访问控制失效，应用程序仅依赖请求中的可预测标识符确定要编辑的评论而未确认用户所有权，可能导致未经授权的经过身份验证的用户编辑他人发布的评论。
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

Vendor Product Affected Versions CPE Subscribe
e107inc e107 < 2.3.4 -

II. Public POCs for CVE-2026-43934

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III. Intelligence Information for CVE-2026-43934

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Patches & Fixes for CVE-2026-43934 (1)

Vendor Advisories for CVE-2026-43934 (1)

Same Patch Batch · e107inc · 2026-05-26 · 4 CVEs total

CVE-2026-43935 8.1 HIGH e107: Host Header Injection in e107 password reset enables phishing
CVE-2026-46620 6.5 MEDIUM e107: CSRF in comment.php moderation endpoints via token-optional validation in session_ha
CVE-2026-43936 4.3 MEDIUM e107: Server-Side Request Forgery (SSRF) in the remote file fetcher

IV. Related Vulnerabilities

Same product: e107
Same vendor: e107inc
Same weakness: CWE-284

V. Comments for CVE-2026-43934

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