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TI-2026-86426 Aliases CVE-2026-121492GHSA-cgwq-34w7-7rpv

Missing authorization in Fiber Admin lets attackers reorder posts

Priority LOW 29CWE-862Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-862.

Summary

The Fiber Admin WordPress plugin before 4.0.1 lacks authorisation checks in some of its AJAX actions. An unauthenticated remote attacker can change the order of arbitrary posts, including drafts, private posts and navigation menu items, and of taxonomy terms when term ordering is enabled (CWE-862). A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Description from the CNA

The Fiber Admin WordPress plugin before 4.0.1 does not have authorisation checks in some of its AJAX actions, allowing unauthenticated users to change the order of arbitrary posts, including drafts, private posts and navigation menu items, as well as the order of taxonomy terms when term ordering is enabled.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00147 3rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Fiber Admin (Unknown): 4.0.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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
UnknownFiber Adminbefore 4.0.14.0.1Patch availableCNA
  • Fiber Admin VendorUnknown Affected before 4.0.1 Fixed in 4.0.1 Patch available CNA

Remediation

Update Fiber Admin to version 4.0.1, which fixes the issue.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

  • Fix · CNA Fiber Admin (Unknown) Fixed in 4.0.1

Fixed in the same release

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

  • Release ·

    Fiber Admin 4.0.1

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-86425 Code injection in Fiber Admin WordPress plugin enables remote code executionPriority MEDIUM 40
    Show all 2 records →

Timeline

  1. 2026-11-07 Threatist record created from CVE-2026-121492
  2. 2026-11-07 Alias added: GHSA-cgwq-34w7-7rpv
  3. 2026-11-07 CVSS score added · CISA ADP
  4. 2026-11-07 Weakness changed · CISA ADP
  5. 2026-11-07 CISA SSVC decision points changed

References

Exploit 1

Sources

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