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TI-2026-15400 Aliases CVE-2026-18807GHSA-qp7g-pcqj-v98x

ECS < 4.3.13 - Contributor+ Arbitrary Post Binding and Global Preset Modification via Dynamic Repeater Handlers

Priority MEDIUM 53CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
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 ECS WordPress plugin before 4.3.13 does not have capability or ownership checks on its dynamic repeater actions, relying only on a nonce available to any user who can open the page builder, allowing users with a contributor-level account or above to read, alter and delete the binding configuration of posts they do not own and to change the ECS WordPress plugin before 4.3.13's site-wide presets.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00254 17th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed ECS (Unknown): 4.3.13

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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
UnknownECSbefore 4.3.134.3.13Patch availableCNA
  • ECS VendorUnknown Affected before 4.3.13 Fixed in 4.3.13 Patch available CNA

Remediation

  • Fix · CNA ECS (Unknown) Fixed in 4.3.13

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-18807
  2. 2026-10-03 Alias added: GHSA-qp7g-pcqj-v98x
  3. 2026-10-16 Title updated · CNA
  4. 2026-10-16 Fix available: Unknown/[email protected] · CNA

References

Exploit 1

Sources

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