Use of less trusted source vulnerability in PayTR Payment and Electronic Money Institution Inc. (CVE-2026-16272)
Source GCVE Database
Not known to be exploited · CVSS 9.1 Critical.
Data as of 10/25/2026, 04:40:11 UTC
- Exploitation
Not in CISA KEV, no exploitation reported
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NWhat to do
AI-suggested
Users should monitor vendor communications for updates and apply any official fixes once available.
Description
CVE-2026-16272 is a critical vulnerability in the PayTR Virtual Pos iFrame API (v9x) WHMCS Module that affects versions 9.0.0 up to but not including 9.0.3. The flaw involves the use of less trusted sources for trusted identifiers, which can be exploited remotely without requiring privileges or user interaction. This vulnerability has a high CVSS score of 9.1, indicating a severe impact on confidentiality and integrity.
Impact
Successful exploitation can lead to compromise of confidentiality and integrity of data processed by the affected module. Since the vulnerability can be exploited remotely without authentication or user interaction, it poses a critical risk to systems using affected versions of the PayTR Virtual Pos iFrame API WHMCS Module.
Weaknesses
- CWE-348Use of Less Trusted Source (opens in a new tab)
Base weakness
The product has two different sources of the same data or information, but it uses the source that has less support for verification, is less trusted, or is less resistant to attack.