CVE-2026-73896: Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in 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-2026-73896 is a 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/2 to gain unauthorized read access to some Helidon data and cause a partial denial of service. The vulnerability has a CVSS 3.1 base score of 6.5, indicating medium severity with impacts on confidentiality and availability. 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 affects the Helidon product of Oracle Fusion Middleware, specifically the Imperative Web Server component. An attacker without authentication but with network access via HTTP/2 can exploit this flaw to read a subset of data accessible through Helidon and cause a partial denial of service condition. The CVSS vector indicates the attack requires no privileges or user interaction and impacts confidentiality and availability. The affected versions are from 4.0.0 up to and including 4.4.1, and also version 4.5.0. Oracle's August 2026 Critical Security Patch Update addresses this and many other vulnerabilities across its product portfolio.
Potential Impact
Successful exploitation results in unauthorized read access to some Helidon data and the ability to cause a partial denial of service. The confidentiality impact is limited (partial data exposure), and availability impact is partial (partial DoS). There is no integrity impact reported. The vulnerability is exploitable remotely without authentication.
Mitigation Recommendations
Oracle has released security patches for this vulnerability as part of the August 2026 Critical Security Patch Update. Users should apply the relevant patches promptly to affected Helidon versions. Oracle strongly recommends staying on actively supported versions and applying security patches without delay. No alternative mitigations or workarounds are specified in the advisory.
CVE-2026-73896: Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in 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-2026-73896 is a 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/2 to gain unauthorized read access to some Helidon data and cause a partial denial of service. The vulnerability has a CVSS 3.1 base score of 6.5, indicating medium severity with impacts on confidentiality and availability. Oracle has included this vulnerability in its August 2026 Critical Security Patch Update, which provides patches for affected versions.
CVSS v3.1
Score 6.5medium
Affected software
Oracle Corporation
Helidon
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the Helidon product of Oracle Fusion Middleware, specifically the Imperative Web Server component. An attacker without authentication but with network access via HTTP/2 can exploit this flaw to read a subset of data accessible through Helidon and cause a partial denial of service condition. The CVSS vector indicates the attack requires no privileges or user interaction and impacts confidentiality and availability. The affected versions are from 4.0.0 up to and including 4.4.1, and also version 4.5.0. Oracle's August 2026 Critical Security Patch Update addresses this and many other vulnerabilities across its product portfolio.
Potential Impact
Successful exploitation results in unauthorized read access to some Helidon data and the ability to cause a partial denial of service. The confidentiality impact is limited (partial data exposure), and availability impact is partial (partial DoS). There is no integrity impact reported. The vulnerability is exploitable remotely without authentication.
Mitigation Recommendations
Oracle has released security patches for this vulnerability as part of the August 2026 Critical Security Patch Update. Users should apply the relevant patches promptly to affected Helidon versions. Oracle strongly recommends staying on actively supported versions and applying security patches without delay. No alternative mitigations or workarounds are specified in the advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- oracle
- Date Reserved
- 2026-08-13T18:41:45.884Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.oracle.com/security-alerts/cspuaug2026.html","vendor":"Oracle"}]
Threat ID: 6a84cce5c6e8be0332c395a3
Added to database: 08/18/2026, 21:21:41 UTC
Last enriched: 09/11/2026, 11:03:54 UTC
Last updated: 10/02/2026, 11:03:05 UTC
Views: 49
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