CVE-2026-108568
InstantSoft icms2 Billing paypal.php validatePaypalOrder data authenticity
- State
- Published
- Severity
- 5.3 Medium
- Published
- Oct 11, 2026
- Updated
- Oct 13, 2026
- Reserved
- Oct 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:C | VulDB |
| 3.0 | 4.3 Medium | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:C | VulDB |
| 2.0 | 4.0 Medium | AV:N/AC:L/Au:S/C:N/I:P/A:N/E:POC/RL:ND/RC:C | VulDB |
Weaknesses
- CWE-345 Insufficient Verification of Data Authenticity
Affected Products
| Product | Versions |
|---|---|
icms2InstantSoft |
|
References
- VDB-416225 | InstantSoft icms2 Billing paypal.php validatePaypalOrder data authenticityvdb-entrytechnical-description
- VDB-416225 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-108568 | CVE Analysis and Reportthird-party-advisory
- Submit #954261 | InstantCMS InstantCMS icms2 2.18.2 Insufficient Verification of Data Authenticitythird-party-advisory
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