TI-2026-51912 Aliases CVE-2026-73900 GHSA-2c9h-jvvw-2c3f

Improper access control in Oracle Helidon

LOW 30CWE-284Published 2026-08-18 · Updated 2026-08-28

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.5.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00319 25th 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: Yes
Technical impact: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Oracle	Helidon	4.0.0 – 4.5.0	—	No fix listed	CNA

Helidon VendorOracle Affected 4.0.0 – 4.5.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:oracle:helidon:4.5.1:::::::*	4.5.1	Vulnerable	Oracle

cpe:2.3:a:oracle:helidon:4.5.1:*:*:*:*:*:*:* Versions 4.5.1 Vulnerable ·Oracle

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-73900
2026-10-03 Alias added: GHSA-2c9h-jvvw-2c3f

References

Advisory 1

Oracle Advisory

TI-2026-51942 Improper access control in Oracle Helidon CVSS 3.1CRITICAL 9.9
TI-2026-51933 Improper access control in Oracle Helidon CVSS 3.1CRITICAL 9.8
TI-2026-51932 Improper access control in Oracle Helidon CVSS 3.1CRITICAL 9.4
TI-2026-51924 Improper access control in Oracle Helidon CVSS 3.1CRITICAL 9.8
TI-2026-51917 Improper access control in Oracle Helidon CVSS 3.1CRITICAL 9.8
TI-2026-49858 Improper access control in Oracle Helidon CVSS 3.1CRITICAL 9.4

See all 114 →

Sources

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