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TI-2026-86431 Aliases CVE-2026-121866GHSA-r4wx-vxrq-8xm2

Privilege escalation in Exsile SMS Gateway via arbitrary option update

Priority LOW 39CWE-269Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-269.

Summary

The iLeads SMS Gateway by Exsile WordPress plugin before 2.0.0 does not check capabilities or nonces in several AJAX actions that update a site option chosen by the request, classified as CWE-269 (Improper Privilege Management). Any authenticated user, such as a subscriber, can change arbitrary WordPress options and escalate to administrator, for example by enabling registration with administrator as the default role. Exploitation requires only a low-privilege account on the site. 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 iLeads SMS Gateway by Exsile WordPress plugin before 2.0.0 does not check capabilities or nonces in several AJAX actions that update a site option chosen by the request, allowing any authenticated user, such as a subscriber, to change arbitrary WordPress options and escalate to administrator, for example by enabling registration with administrator as the default role.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00132 2nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed iLeads SMS Gateway by Exsile (Unknown): 2.0.0

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
UnknowniLeads SMS Gateway by Exsilebefore 2.0.02.0.0Patch availableCNA
  • iLeads SMS Gateway by Exsile VendorUnknown Affected before 2.0.0 Fixed in 2.0.0 Patch available CNA

Remediation

Update the iLeads SMS Gateway by Exsile plugin to version 2.0.0 or later.

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

  • Fix · CNA iLeads SMS Gateway by Exsile (Unknown) Fixed in 2.0.0

Timeline

  1. 2026-11-07 Threatist record created from CVE-2026-121866
  2. 2026-11-07 Alias added: GHSA-r4wx-vxrq-8xm2
  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