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Authentication bypass in REDAXO Core history plugin allows token forgery

Priority MEDIUM 49CWE-287Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

REDAXO core from 5.3.0 before 5.21.4 contains an authentication bypass in the structure/history plugin. An unauthenticated attacker can forge temporary login tokens by forcing the session-tied secret into a predictable state, gaining backend access to accounts such as admin and code execution outside live mode. The flaw is classified as CWE-287 (Improper Authentication).

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

Description from the CNA

REDAXO core from 5.3.0 before 5.21.4 contains an authentication bypass vulnerability in the structure/history plugin that allows unauthenticated attackers to forge temporary login tokens. Attackers can force the session-tied secret into a predictable state and forge tokens for accounts like admin, gaining backend access and code execution outside live mode.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00679 52nd percentileScored 2026-11-07
Fix Fixed core (redaxo): 5.21.4

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

VendorProductAffected versionsFixed inStatusSource
redaxocore5.3.0 to before 5.21.45.21.4Patch availableCNA
  • core Vendorredaxo Affected 5.3.0 to 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 or later, which fixes the flaw. The sources list no fixed version for REDAXO core other than 5.21.4.

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

  • 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-2026-81104 Missing authorization in REDAXO version and history previewsPriority LOW 31
    • TI-2026-81106 REDAXO slice operations allow editors to modify others' slicesPriority LOW 30
    • TI-2026-81105 Missing authorization in REDAXO media pool bulk movePriority LOW 30

Timeline

  1. 2026-10-27 Threatist record created from CVE-2026-117532
  2. 2026-10-27 Alias added: GHSA-v3wh-4qp2-g2hm
  3. 2026-11-02 CISA SSVC decision points changed

References

  • 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