CVE-2023-4934

HIGHNVD 8.88.8—

8.8

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: 22.2%
KEV: Not listed

Published

September 27, 2023

Last Modified

May 21, 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.

GHSA-4cxm-9rxq-69rw
GitHub Security AdvisoriesHigh
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')...

Weakness Classification(1)

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

CWE-639Authorization Bypass Through User-Controlled Key (IDOR)

Data Freshness Timeline

(refreshed 10× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
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2026-05-31 00:15 UTCepss_batch
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2026-05-29 13:43 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-22 21:16 UTCepss_batch
2026-05-22 21:16 UTCepss_batch
2026-05-22 21:16 UTCepss_batch

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 May 21, 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 22.2% 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

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CVE-2023-4934

📅 Published

🔄 Last Modified

📋 Advisory Details (2)

T.C. Siber Güvenlik Başkanlığı

T.C. Siber Güvenlik Başkanlığı

📣 Vendor Advisories for CVE-2023-4934(1)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-4934?

🔗 Related CVEs(same CWE)

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Published

Last Modified

Advisory Details (2)

Vendor Advisories for CVE-2023-4934(1)

Frequently asked(5)

Related CVEs(same CWE)