TabaPay Gateway callbacks permit unauthenticated arbitrary-user login

TabaPay Gateway through 1.4.0 does not validate its payment callback before establishing a session for the account associated with the referenced order. An unauthenticated attacker can target an order belonging to any registered user, including an administrator, and receive that user's authenticated session.

CVE / CNA score 9.8 CVSS 3.1 · 134c704f-9b21-4f2e-91b3-4a467353bcc0

NVD score Pending NVD has not published its own CVSS assessment.

Component: TabaPay Gateway
Plugin slug: tabapay-gateway
Affected: <= 1.4.0
Safe version: See mitigation notes
Published: Aug 19, 2026
Weakness: CWE-287 — Improper Authentication

This CVE was published Aug 19, 2026 and is one of 1 known issue for this plugin.

What to do

Update, patch or deactivate.

No fixed release is identified. Disable TabaPay Gateway until a release newer than 1.4.0 is confirmed to fix CVE-2026-18031. Reconcile payments and orders, reset administrator sessions and investigate the site if exploitation is suspected.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The TabaPay Gateway WordPress plugin through 1.4.0 does not validate the payment callback before establishing a session for the account associated with the referenced order, allowing unauthenticated attackers to log in as any registered user, including an administrator.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Primary and upstream sources

Data attribution: This product uses the NVD API but is not endorsed or certified by the NVD.

Vulnerability data licensing

CVE. Copyright © 1999–2026, The MITRE Corporation. MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

CWE. Copyright © 2006–2026, The MITRE Corporation. CWE™ is free to use by any organization or individual for any research, development, and/or commercial purposes, per these CWE Terms of Use. Accordingly, The MITRE Corporation hereby grants you a non-exclusive, royalty-free license to use CWE for research, development, and commercial purposes. Any copy you make for such purposes is authorized on the condition that you reproduce MITRE’s copyright designation and this license in any such copy.

CVSS. CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and used by permission.

Source-record text is CVE/CNA content delivered through the NVD API. Fused summaries and remediation guidance are independently authored and are not attributed to NVD.

All other copyrights and trademarks are the property of their respective owners.

Full data sources, terms, and disclaimers