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TI-2025-27736 Aliases CVE-2025-42601GHSA-gw5v-3q9m-pxcv

Captcha Bypass Vulnerability in Meon KYC solutions

Priority LOW 36CWE-602Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

This vulnerability exists in Meon KYC solutions due to insufficient server-side validation of the Captcha in certain API endpoints. A remote attacker could exploit this vulnerability by intercepting the request and removing the Captcha parameter leading to bypassing the Captcha verification mechanism.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00434 37th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MeonKYC solutions1.1—No fix listedCNA
  • KYC solutions VendorMeon Affected 1.1 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-42601
  2. 2026-10-03 Alias added: GHSA-gw5v-3q9m-pxcv

References

Advisory 1

  • TI-2025-27740 Improper Access Control Vulnerability in Meon Bidding Solutions CVSS 4.0CRITICAL 9.3
  • TI-2025-27738 Information Disclosure Vulnerability in Meon KYC solutions CVSS 4.0HIGH 8.7
  • TI-2025-27735 Brute Force Attack Vulnerability in Meon KYC solutions CVSS 4.0HIGH 8.2
  • TI-2025-27739 Detailed Error Response Vulnerability in Meon KYC solutions CVSS 4.0MEDIUM 6.9
  • TI-2025-27737 Improper Authentication Vulnerability in Meon KYC solutions CVSS 4.0HIGH 8.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences