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TI-2026-81100 Aliases CVE-2026-116893GHSA-hcxm-g8rr-hmvw

Missing authorization in REDAXO core package API

Priority LOW 29CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

REDAXO core before 5.21.5 has a missing authorization check in the rex_api_package API, which lets non-admin backend users manage packages when they hold only a valid CSRF token. An attacker with such a token, such as a demoted admin with an active session, can uninstall system addons like structure, which drops their database tables, and can also deactivate, install, activate, or delete non-system packages. The flaw is tracked as CWE-862 and is exploitable over the network with low privileges and no user interaction.

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

Description from the CNA

REDAXO core before 5.21.5 contains a missing authorization vulnerability in the rex_api_package API function that lets non-admin backend users manage packages with only a valid CSRF token. Attackers holding a token, such as demoted admins with active sessions, can uninstall system addons like structure (dropping their database tables), deactivate, install, or activate packages, and delete non-system packages.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00252 16th percentileScored 2026-11-07
Fix Fixed core (redaxo): 5.21.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
redaxocorebefore 5.21.55.21.5Patch availableCNA
  • core Vendorredaxo Affected before 5.21.5 Fixed in 5.21.5 Patch available CNA

CPE names Threatist (inferred) · 1

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

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

Remediation

Update REDAXO core to version 5.21.5.

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

  • Fix · CNA core (redaxo) Fixed in 5.21.5

Fixed in the same release

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

  • Release ·

    redaxo core 5.21.5

    4 records Highest priority Priority LOW 4 LOW

    Other records, highest priority first

    • TI-2026-81103 Missing authorization in REDAXO backup export exposes user tablesPriority LOW 35
    • TI-2026-81102 REDAXO CSRF via Safe Mode Toggle ParameterPriority LOW 22
    • TI-2026-81101 Insufficient session expiration in REDAXO lets sessions survive password changesPriority LOW 11
    Show all 4 records →

Timeline

  1. 2026-10-27 Threatist record created from CVE-2026-116893
  2. 2026-10-27 Alias added: GHSA-hcxm-g8rr-hmvw
  3. 2026-10-28 Priority changed: MEDIUM → LOW
  4. 2026-11-02 CISA SSVC decision points changed

References

Patch 1

Advisory 1

  • 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