TI-2026-81112 Aliases CVE-2026-117536 GHSA-4rqm-5495-h9jx

REDAXO CSRF Token Bypass in users/users Enables Privilege Escalation

MEDIUM 44CWE-352Published 2026-10-27 · Updated 2026-11-02

Key facts

Attack vector: Network
Privileges required: None
User interaction: Active
Attack complexity: Low
Attack requirements: None
Impact type: Tampering
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-352.

Summary

REDAXO before 5.21.3 contains a cross-site request forgery vulnerability in the backend user administration page (users/users). The CSRF token check runs only when the save parameter is set, so the update path triggered by FUNC_UPDATE skips it. An attacker can lure a logged-in backend user with the users[] permission to a crafted GET link that grants administrator rights, deactivates accounts, or locks out the sole administrator. This flaw is tracked as CWE-352.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Description from the CNA

REDAXO before 5.21.3 contains a cross-site request forgery vulnerability in the backend user administration page (users/users) because the CSRF token check only runs when the save parameter is set, while the update path triggered by FUNC_UPDATE does not require it. Attackers can lure a logged-in backend user with the users[] permission to a crafted GET link to grant administrator rights, deactivate accounts, or lock out the sole administrator.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00135 2nd percentileScored 2026-11-07

Fix Fixed core (redaxo): 5.21.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
redaxo	core	before 5.21.3	5.21.3	Patch available	CNA

core Vendorredaxo Affected before 5.21.3 Fixed in 5.21.3 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:redaxo:redaxo::::::::	—	—	redaxo

cpe:2.3:a:redaxo:redaxo:*:*:*:*:*:*:*:* Versions — — ·redaxo

Remediation

Update REDAXO core to version 5.21.3, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Fix · CNA core (redaxo) Fixed in 5.21.3

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-10-27
redaxo core 5.21.3
3 records Highest priority Priority MEDIUM 1 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2026-81111 Reflected XSS via opener_link in REDAXO Media PoolPriority LOW 23
- TI-2026-81110 Cross-site request forgery in REDAXO article history pluginPriority LOW 22
Show all 3 records →

Timeline

2026-10-27 Threatist record created from CVE-2026-117536
2026-10-27 Alias added: GHSA-4rqm-5495-h9jx
2026-10-28 Priority changed: MEDIUM → LOW
2026-11-02 CISA SSVC decision points changed
2026-11-02 Priority changed: LOW → MEDIUM

References

Advisory 1

GitHub Security Advisory (GHSA-mrrj-4f5x-j958)

TI-2018-15578 Redaxo CMS Mediapool Addon 5.5.1 Arbitrary File Upload CVSS 4.0HIGH 8.7
TI-2026-17559 Redaxo has Path Traversal in Backup Addon Leading to Arbitrary File Read CVSS 4.0HIGH 8.3
TI-2026-38656 Unrestricted file upload in redaxo core CVSS 3.1HIGH 7.5
TI-2025-39517 A Remote Code Execution (RCE) vulnerability in the template management component in… CVSS 3.1HIGH 7.2
TI-2024-30898 REDAXO CMS v2.11.0 was discovered to contain a remote code execution (RCE) vulnerability. CVSS 3.1HIGH 7.2
TI-2024-30896 An arbitrary file upload vulnerability in the MediaPool module of Redaxo CMS v5.17.1… CVSS 3.1HIGH 7.2

See all 48 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences