CVE-2023-4934

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2023-09-27. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Authorization Bypass Through User-Controlled Key vulnerability in Usta AYBS allows Authentication Abuse, Authentication Bypass.

This issue affects AYBS: before 1.0.3.

CVSS v3
8.8
EG Score
8.8(medium)
EPSS
57.1%
KEV
Not listed

Published

September 27, 2023

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated May 22, 2026
No patch confirmed yet.
generic

T.C. Siber Güvenlik Başkanlığı

https://www.usom.gov.tr/bildirim/tr-23-0558
generic

T.C. Siber Güvenlik Başkanlığı

https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-23-0558

Vendor Advisories for CVE-2023-4934(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Frequently asked(5)

What is CVE-2023-4934?
CVE-2023-4934 is a high vulnerability published on September 27, 2023. Authorization Bypass Through User-Controlled Key vulnerability in Usta AYBS allows Authentication Abuse, Authentication Bypass. This issue affects AYBS: before 1.0.3.
When was CVE-2023-4934 disclosed?
CVE-2023-4934 was first published in the National Vulnerability Database on September 27, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-4934 actively exploited?
CVE-2023-4934 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 57.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-4934?
CVE-2023-4934 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2023-4934?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-4934, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2023-4934

Explore →

Is Your Infrastructure Affected by CVE-2023-4934?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs