CVE-2026-73918: Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Helidon accessible data as well as unauthorized read access to a subset of Helidon accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. in Oracle Corporation Helidon
CVE-2026-73918 is a high-severity vulnerability in Oracle Helidon versions 4.0.0 through 4.4.1 and version 4.5.0. It allows an unauthenticated attacker with network access via HTTP to perform unauthorized update, insert, or delete operations on some accessible data, read a subset of accessible data, and cause a partial denial of service. The vulnerability affects the Imperative Web Server component of Helidon. Oracle has included this vulnerability in its August 2026 Critical Security Patch Update, which provides patches for affected versions.
AI Analysis
Technical Summary
This vulnerability in Oracle Helidon (Imperative Web Server component) allows an unauthenticated attacker with network access via HTTP to compromise the system. Successful exploitation can lead to unauthorized modification (update, insert, delete) of some accessible data, unauthorized read access to a subset of data, and partial denial of service. The CVSS 3.1 base score is 7.3, reflecting impacts on confidentiality, integrity, and availability. Affected versions are 4.0.0 through 4.4.1 inclusive, and 4.5.0. Oracle has addressed this vulnerability in its August 2026 Critical Security Patch Update, which includes targeted security fixes for Helidon and other products.
Potential Impact
An attacker without authentication and with network access via HTTP can exploit this vulnerability to gain unauthorized read and write access to some Helidon accessible data and cause partial denial of service. This compromises confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Oracle has released patches for this vulnerability as part of the August 2026 Critical Security Patch Update. It is strongly recommended to apply the official Oracle patches promptly to affected Helidon versions. Customers should remain on actively supported versions and apply security updates without delay. No alternative mitigations or workarounds are specified in the vendor advisory.
CVE-2026-73918: Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Helidon accessible data as well as unauthorized read access to a subset of Helidon accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. in Oracle Corporation Helidon
Description
CVE-2026-73918 is a high-severity vulnerability in Oracle Helidon versions 4.0.0 through 4.4.1 and version 4.5.0. It allows an unauthenticated attacker with network access via HTTP to perform unauthorized update, insert, or delete operations on some accessible data, read a subset of accessible data, and cause a partial denial of service. The vulnerability affects the Imperative Web Server component of Helidon. Oracle has included this vulnerability in its August 2026 Critical Security Patch Update, which provides patches for affected versions.
CVSS v3.1
Score 7.3high
Affected software
Oracle Corporation
Helidon
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Oracle Helidon (Imperative Web Server component) allows an unauthenticated attacker with network access via HTTP to compromise the system. Successful exploitation can lead to unauthorized modification (update, insert, delete) of some accessible data, unauthorized read access to a subset of data, and partial denial of service. The CVSS 3.1 base score is 7.3, reflecting impacts on confidentiality, integrity, and availability. Affected versions are 4.0.0 through 4.4.1 inclusive, and 4.5.0. Oracle has addressed this vulnerability in its August 2026 Critical Security Patch Update, which includes targeted security fixes for Helidon and other products.
Potential Impact
An attacker without authentication and with network access via HTTP can exploit this vulnerability to gain unauthorized read and write access to some Helidon accessible data and cause partial denial of service. This compromises confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Oracle has released patches for this vulnerability as part of the August 2026 Critical Security Patch Update. It is strongly recommended to apply the official Oracle patches promptly to affected Helidon versions. Customers should remain on actively supported versions and apply security updates without delay. No alternative mitigations or workarounds are specified in the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- oracle
- Date Reserved
- 2026-08-13T18:41:45.889Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.oracle.com/security-alerts/cspuaug2026.html","vendor":"Oracle"}]
Threat ID: 6a84cceec6e8be0332c397e6
Added to database: 08/18/2026, 21:21:50 UTC
Last enriched: 09/11/2026, 10:47:53 UTC
Last updated: 10/02/2026, 02:46:06 UTC
Views: 55
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