CVE-2026-81740

Paytm Payment Gateway < 2.8.9 - Unauthenticated Order Status Manipulation via Payment Callback

Published Oct 2, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
The Paytm Payment Gateway WordPress plugin before 2.8.9 does not verify that payment callbacks genuinely originate from the payment provider when its secret key has not been configured, which is its state immediately after activation, allowing unauthenticated attackers to change the status of arbitrary orders, including marking unpaid orders as paid and reducing stock.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Paytm
Paytm payment Gateway
Wordpress-extensions
Wordpress-extensions paytm Payment Gateway
Vendors & Products Paytm
Paytm payment Gateway
Wordpress-extensions
Wordpress-extensions paytm Payment Gateway
Type Values Removed Values Added
Weaknesses CWE-287
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description The Paytm Payment Gateway WordPress plugin before 2.8.9 does not verify that payment callbacks genuinely originate from the payment provider when its secret key has not been configured, which is its state immediately after activation, allowing unauthenticated attackers to change the status of arbitrary orders, including marking unpaid orders as paid and reducing stock.
Title Paytm Payment Gateway < 2.8.9 - Unauthenticated Order Status Manipulation via Payment Callback
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Oct 2, 2026, 10:54 AM
Reserved
Aug 27, 2026, 11:47 AM
Status
Deferred
Published
Oct 2, 2026, 6:16 AM
Modified
Oct 2, 2026, 6:00 PM