CVE-2026-108568 InstantSoft icms2 Billing paypal.php validatePaypalOrder data authenticity
Attackers can bypass PayPal order validation by manipulating signature arguments, potentially altering billing data in InstantSoft icms2.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-108568?
CVE-2026-108568 is a medium-severity vulnerability in InstantSoft icms2, published on 11 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was determined in InstantSoft icms2 up to 2.18.2. The affected element is the function validatePaypalOrder of the file system/controllers/billing/actions/paypal.php of the component Billing Module. Executing a manipulation of the argument bid/sig can lead to insufficient verification of data authenticity. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Weakness: CWE-345
Which versions are affected by CVE-2026-108568?
How do I fix CVE-2026-108568?
No fix has been published for CVE-2026-108568 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-108568 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108568 exists.
Sources
Also known as GHSA-p5x9-rh29-4r44.