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TI-2026-81106 Aliases CVE-2026-116899GHSA-v2qf-q3h8-xpm7

REDAXO slice operations allow editors to modify others' slices

Priority LOW 30CWE-639Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

REDAXO before 5.21.4 contains a broken access control flaw that lets authenticated editors change slices in categories they are not permitted to edit. An editor with low privileges can pair a permitted article with a slice ID from another category, using the 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. The weakness is classified as CWE-639, an authorization bypass through a user-controlled key.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00181 7th percentileScored 2026-11-07
Fix Fixed core (redaxo): 5.21.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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 5.21.45.21.4Patch availableCNA
  • core Vendorredaxo Affected before 5.21.4 Fixed in 5.21.4 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 5.21.4, which fixes this issue. The sources list no advisory identifier for the fix.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

  • Fix · CNA core (redaxo) Fixed in 5.21.4

Fixed in the same release

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

  • Release ·

    redaxo core 5.21.4

    6 records Highest priority Priority MEDIUM 1 MEDIUM, 5 LOW

    Other records, highest priority first

    • TI-2026-81108 Authentication bypass in REDAXO Core history plugin allows token forgeryPriority MEDIUM 49
    • TI-2026-81104 Missing authorization in REDAXO version and history previewsPriority LOW 31
    • TI-2026-81105 Missing authorization in REDAXO media pool bulk movePriority LOW 30
    Show all 6 records →

Timeline

  1. 2026-10-27 Threatist record created from CVE-2026-116899
  2. 2026-10-27 Alias added: GHSA-v2qf-q3h8-xpm7
  3. 2026-10-28 Priority changed: MEDIUM → LOW
  4. 2026-11-04 CISA SSVC decision points changed

References

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