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Fencer Vulns
critical 9.1

CVE-2026-16272 json

Client IP Spoofing via Untrusted HTTP Headers in PayTR's PayTR Virtual Pos iFrame API WHMCS Module

published 2026-09-09 2 mo ago modified 2026-10-01 39 d ago also EUVD-2026-74769

cvss
9.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 11%
public exploits
0
none known

Summary

Use of less trusted source vulnerability in PayTR Payment and Electronic Money Institution Inc. PayTR Virtual Pos iFrame API WHMCS Module allows Exploitation of Trusted Identifiers.

This issue affects PayTR Virtual Pos iFrame API WHMCS Module: from v9.0.0 before v9.0.3.

Patch / fix

  • PayTR Payment and Electronic Money Institution Inc. PayTR Virtual Pos iFrame API WHMCS Module v9.0.3

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
1 mo ago

Exploit prediction

0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

  • PayTR Payment and Electronic Money Institution Inc. PayTR Virtual Pos iFrame API WHMCS Module

Classification

Weakness
  • CWE-348 Use of Less Trusted Source

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.