CVE-2026-16037 json
Callback Authentication Bypass via Timing Attack in PayTR's PayTR Virtual Pos iFrame API WHMCS Module
published 2026-09-08 2 mo ago modified 2026-10-01 39 d ago also EUVD-2026-72853
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 36%
- public exploits
- 0
- none known
Summary
Observable timing discrepancy vulnerability in PayTR Payment and Electronic Money Institution Inc. PayTR Virtual Pos iFrame API WHMCS Module allows Black Box Reverse Engineering.
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
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected products
- PayTR Payment and Electronic Money Institution Inc. PayTR Virtual Pos iFrame API WHMCS Module
Classification
- Weakness
-
- CWE-208 Observable Timing Discrepancy
References
-
siberguvenlik.gov.tr
/guvenlik-bildirimleri/detay/tr-26-1034
government-resource
Sources
- CVE List CVE-2026-16037
- NVD CVE-2026-16037
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.