CVE-2026-81424 Accept Stripe Payments < 2.1.4 - Unauthenticated Product Substitution via IDOR
Unauthenticated attackers can substitute products during checkout by paying for one item and receiving another of equal or lower value.
- 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-2026-81424?
CVE-2026-81424 is a medium-severity vulnerability in Unknown Accept Stripe Payments, published on 5 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Accept Stripe Payments WordPress plugin before 2.1.4 does not verify that the product fulfilled when a checkout is completed matches the product the authoritative payment was actually made for, checking only that the amount paid is at least the referenced product's price, allowing unauthenticated attackers who complete a genuine payment to obtain fulfilment for a different, equal- or lower-priced product than the one they paid for.
Weakness: CWE-639
Which versions are affected by CVE-2026-81424?
How do I fix CVE-2026-81424?
No fix has been published for CVE-2026-81424 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-81424 being exploited?
There is no known exploitation of CVE-2026-81424 in the wild and no public exploit code.
Sources
Also known as GHSA-4qcx-xfr8-6hf6.