CVE-2026-116899— REDAXO before 5.21.4 Broken Access Control in Slice Operations

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.

在 5.21.4 之前的 REDAXO 版本中存在一个访问控制失效漏洞。该漏洞允许已认证的编辑者通过将允许访问的文章与外部的切片（slice）ID 配对，从而修改未授权类别中的切片。攻击者可利用此漏洞滥用内容编辑、删除和编辑功能，或通过和 API，执行删除、切换状态、移动或覆盖其他编辑者切片的操作。

CVSS 6.5 · Medium Updated Oct 27, 2026

Possible ATT&CK Techniques 2 AI

T1548 · Abuse Elevation Control Mechanism T1551

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Vulnerability Information

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Vulnerability Title

REDAXO before 5.21.4 Broken Access Control in Slice Operations

Source: CVE Program / CVE List V5

Vulnerability Description

REDAXO before 5.21.4 contains a broken access control vulnerability that allows authenticated editors to modify slices in unauthorized categories by pairing a permitted article with a foreign slice id. Attackers can abuse content/edit delete and edit functions or the content_slice_status and content_move_slice APIs to delete, toggle, move, or overwrite other editors' slices.

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

通过用户控制密钥绕过授权机制

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
redaxo	core	0 ~ 5.21.4	-

II. Public POCs for CVE-2026-116899

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-116899

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Other References for CVE-2026-116899 (2)

https://github.com/redaxo/core/security/advisories/GHSA-5m63-c3qx-wq8v vendor-advisory
https://www.vulncheck.com/advisories/redaxo-before-5.21.4-broken-access-control-in-slice-operations third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-116899

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-2026-116896	7.5 HIGH	REDAXO before 5.21.5 Privilege Escalation via Backup Export of Authentication Tables
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-2026-117535	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-639