REDAXO before 5.21.0 contains a reflected cross-site scripting vulnerability that allows authenticated attackers to inject scripts via the type parameter of the metainfo_default_fields_create API. Attackers can craft a link with a valid CSRF token and HTML payload that rex_view::message() renders unescaped, executing scripts in a victim's backend session.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required High

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
redaxo core unaffected
Version Status Constraints
0 affected < 5.21.0
5.21.0 unaffected —

No data.

No data.

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Project Subscriptions

Vendors Products
Redaxo Subscribe
Redaxo Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/redaxo/core/security/advisories/GHSA-m662-8jrj-cw6v cve-icon cve-icon
https://www.vulncheck.com/advisories/redaxo-before-5.21.0-reflected-xss-via-metainfo-api-type-parameter cve-icon cve-icon
History

Tue, 27 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 27 Oct 2026 11:15:00 +0000

Type Values Removed Values Added
Description REDAXO before 5.21.0 contains a reflected cross-site scripting vulnerability that allows authenticated attackers to inject scripts via the type parameter of the metainfo_default_fields_create API. Attackers can craft a link with a valid CSRF token and HTML payload that rex_view::message() renders unescaped, executing scripts in a victim's backend session.
Title REDAXO before 5.21.0 Reflected XSS via Metainfo API type Parameter
First Time appeared Redaxo
Redaxo redaxo
Weaknesses CWE-79
CPEs cpe:2.3:a:redaxo:redaxo:*:*:*:*:*:*:*:*
Vendors & Products Redaxo
Redaxo redaxo
References
Metrics cvssV3_1

{'score': 4.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L'}

cvssV4_0

{'score': 2.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-27T14:12:21.902Z

Reserved: 2026-10-27T10:33:39.045Z

Link: CVE-2026-117537

cve-icon Vulnrichment

Updated: 2026-10-27T13:42:35.364Z

cve-icon NVD

Status : Deferred

Published: 2026-10-27T11:17:34.343

Modified: 2026-10-27T15:05:24.450

Link: CVE-2026-117537

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-27T12:30:02Z

Weaknesses