What’s Vulnerable › Vulnerabilities

CVE-2023-4934: IDOR in Usta AYBS

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-09-27 · updated 2026-06-17
• Weakness: CWE-639

Description

Authorization Bypass Through User-Controlled Key vulnerability in Usta AYBS allows Authentication Abuse, Authentication Bypass. This issue affects AYBS: before 1.0.3.

Affected products

• Usta AYBS: before 1.0.3 — fixed in 1.0.3

How to fix

Upgrade to a fixed version: Usta AYBS 1.0.3. Check the vendor advisory for mitigations.

References

• https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-23-0558
• https://www.usom.gov.tr/bildirim/tr-23-0558
• https://www.usom.gov.tr/bildirim/tr-23-0558

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