TI-2026-51915 Aliases CVE-2026-73903 GHSA-9pr8-f4gj-9hr5

Improper access control in Oracle Helidon

LOW 39CWE-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: None · High · 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 creation, deletion or modification access to critical data or all Helidon accessible data. CVSS 3.1 Base Score 7.5 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00354 29th 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-2026-73903
2026-10-03 Alias added: GHSA-9pr8-f4gj-9hr5

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