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TI-2020-18582 Aliases CVE-2020-36284GHSA-vx7r-7h24-rm89

Union Pay up to 3.4.93.4.9, for android, contains a CWE-347: Improper Verification of…

Priority LOW 35CWE-347Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-347.

Summary

Union Pay up to 3.4.93.4.9, for android, contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability, allows attackers to shop for free in merchants' websites and mobile apps, via a crafted authentication code (MAC) which is generated based on a secret key which is NULL.

Why it matters now

EPSS 0.00904 60th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:unionpayintl:union_pay:*:*:*:*:*:android:*:*up to 3.4.93.4.9VulnerableUnionpayintl
  • cpe:2.3:a:unionpayintl:union_pay:*:*:*:*:*:android:*:* Versions up to 3.4.93.4.9 Vulnerable ·Unionpayintl

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-36284
  2. 2026-10-03 Alias added: GHSA-vx7r-7h24-rm89

References

Advisory 2

Other 1

  • TI-2020-18583 Union Pay up to 3.3.12, for iOS mobile apps, contains a CWE-347: Improper Verification of… CVSS 3.1HIGH 7.5
  • TI-2020-14575 Union Pay up to 1.2.0, for web based versions contains a CWE-347: Improper Verification… CVSS 3.1HIGH 7.5

Sources

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