CVE-2026-81740 Paytm Payment Gateway < 2.8.9 - Unauthenticated Order Status Manipulation via Payment Callback
Unauthenticated attackers can manipulate order statuses in the Paytm Payment Gateway plugin if the secret key is not configured, allowing them to mark unpaid orders as paid.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-81740?
CVE-2026-81740 is a medium-severity missing authorization vulnerability in Unknown Paytm Payment Gateway, published on 2 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-287
Which versions are affected by CVE-2026-81740?
How do I fix CVE-2026-81740?
No fix has been published for CVE-2026-81740 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-81740 being exploited?
There is no known exploitation of CVE-2026-81740 in the wild and no public exploit code.
Sources
Also known as GHSA-2xw5-r48v-m7fg.