CVE-2026-116896— REDAXO before 5.21.5 Privilege Escalation via Backup Export of Authentication Tables

Quick assessment

Affected

redaxo core

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.

REDAXO 5.21.5 之前的版本在备份插件（backup addon）的导出功能中存在授权缺失漏洞。该漏洞允许任意数据库表被导出，使得拥有权限的非管理员用户能够导出、以及其他应用程序的数据库表。攻击者可借此获取明文会话 ID 和“保持登录”密钥，从而接管管理员账户；或获取密码哈希值，用于离线暴力破解。

CVSS 7.5 · High Updated Oct 27, 2026

Possible ATT&CK Techniques 2 AI

T1078 · Valid Accounts T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

REDAXO before 5.21.5 Privilege Escalation via Backup Export of Authentication Tables

Source: CVE Program / CVE List V5

Vulnerability Description

REDAXO before 5.21.5 contains a missing authorization vulnerability in the backup addon export that accepts any database table, allowing non-admin users with the backup[export] permission to export rex_user, rex_user_session, and other applications' tables. Attackers can obtain plaintext session ids and stay-logged-in keys to take over admin accounts, or password hashes for offline cracking.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

授权机制缺失

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
redaxo	core	0 ~ 5.21.5	-

II. Public POCs for CVE-2026-116896

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-116896

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Other References for CVE-2026-116896 (2)

https://github.com/redaxo/core/security/advisories/GHSA-phjc-vx3j-58r3 vendor-advisory
https://www.vulncheck.com/advisories/redaxo-before-5.21.5-privilege-escalation-via-backup-export-of-authentication-tables third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-116896

Same Patch Batch · redaxo · 2026-10-27 · 15 CVEs total

CVE-2026-117532	9.8 CRITICAL	REDAXO Core 5.3.0 before 5.21.4 Authentication Bypass via History Plugin
CVE-2026-117536	8.8 HIGH	REDAXO before 5.21.3 CSRF Token Bypass via users/users Privilege Escalation
CVE-2026-116898	7.1 HIGH	REDAXO before 5.21.4 Missing Authorization in Media Pool Bulk Move
CVE-2026-116893	6.8 MEDIUM	REDAXO core before 5.21.5 Missing Authorization in rex_api_package API
CVE-2026-116897	6.5 MEDIUM	REDAXO before 5.21.4 Missing Authorization in Version and History Previews
CVE-2026-116899	6.5 MEDIUM	REDAXO before 5.21.4 Broken Access Control in Slice Operations
CVE-2026-117535	6.1 MEDIUM	REDAXO before 5.21.3 Reflected XSS via opener_link in Media Pool
CVE-2026-117534	5.4 MEDIUM	REDAXO before 5.21.3 CSRF in Article History Plugin
CVE-2026-116900	5.4 MEDIUM	REDAXO before 5.21.4 Stored XSS via Media and Link Input Widgets
CVE-2026-116895	5.4 MEDIUM	REDAXO before 5.21.5 CSRF via Safe Mode Toggle Parameter
CVE-2026-117533	4.4 MEDIUM	REDAXO 5.18.0 before 5.21.4 Stored XSS via Unsanitized Mediapool SVG Uploads
CVE-2026-116894	4.2 MEDIUM	REDAXO before 5.21.5 Insufficient Session Expiration on Password Change
CVE-2026-117538	4.1 MEDIUM	REDAXO before 5.21.0 Reflected XSS via Packages API function Parameter
CVE-2026-117537	4.1 MEDIUM	REDAXO before 5.21.0 Reflected XSS via Metainfo API type Parameter

IV. Related Vulnerabilities

Same product: core

Same vendor: redaxo

Same weakness: CWE-862