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CVE-2026-117538 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

REDAXO before 5.21.0 contains a reflected cross-site scripting vulnerability in the backend packages API, where the function parameter is concatenated into an error message rendered without HTML escaping. Attackers can lure an authenticated backend user to a crafted link containing a valid CSRF token, executing JavaScript that performs same-origin actions or reads DOM data.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:4.7 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

CNA: [email protected]CVSS-B:4.1 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/redaxo/core/security/advisories/GHSA-xq4j-g85q-wf97	CISA-ADP	AdvisoryExploitVendor
https://github.com/redaxo/core/security/advisories/GHSA-xq4j-g85q-wf97	[email protected]	AdvisoryExploitVendor
https://www.vulncheck.com/advisories/redaxo-before-5.21.0-reflected-xss-via-packages-api-function-parameter	[email protected]	AdvisoryVendor

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]

Affected Products

Product	Versions
REDAXO	<= 5.20.2 (semver)
CPE cpe:2.3:a:redaxo:redaxo:::::::: Remediation Upgrade: 5.21.0moderate effort

Change History

2 change records found show changes

Date	Action	Recorded By
Nov 4, 2026	CVE Modified	CISA-ADP
Oct 27, 2026	New CVE Received	[email protected]