CVE-2026-73887: Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Helidon accessible data. in Oracle Corporation Helidon
CVE-2026-73887 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/2 to gain unauthorized access to critical or all accessible data in Helidon. The vulnerability has a CVSS 3.1 base score of 7.5, indicating a significant confidentiality impact without requiring privileges or user interaction.
AI Analysis
Technical Summary
This vulnerability affects the Imperative Web Server component of Oracle Helidon. An attacker with network access can exploit this flaw via HTTP/2 without authentication, potentially compromising Helidon and accessing sensitive data. The CVSS vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N) confirms network attack vector, low attack complexity, no privileges or user interaction required, and high confidentiality impact with no integrity or availability impact. The affected versions explicitly include >=4.0.0 <=4.4.1 and =4.5.0. Oracle has published a Critical Security Patch Update in August 2026 addressing this and other vulnerabilities, recommending customers apply patches promptly.
Potential Impact
Successful exploitation can lead to unauthorized access to critical or all data accessible through Helidon, compromising confidentiality. There is no reported impact on integrity or availability. The vulnerability is exploitable remotely without authentication, increasing risk.
Mitigation Recommendations
Oracle has released security patches as part of the August 2026 Critical Security Patch Update. Customers are strongly advised to apply these patches without delay and remain on actively supported versions. No indication exists that the vulnerability is already mitigated or requires no action. Patch availability details are provided in Oracle's advisory at https://www.oracle.com/security-alerts/cspuaug2026.html.
CVE-2026-73887: Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Helidon accessible data. in Oracle Corporation Helidon
Description
CVE-2026-73887 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/2 to gain unauthorized access to critical or all accessible data in Helidon. The vulnerability has a CVSS 3.1 base score of 7.5, indicating a significant confidentiality impact without requiring privileges or user interaction.
CVSS v3.1
Score 7.5high
Affected software
Oracle Corporation
Helidon
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the Imperative Web Server component of Oracle Helidon. An attacker with network access can exploit this flaw via HTTP/2 without authentication, potentially compromising Helidon and accessing sensitive data. The CVSS vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N) confirms network attack vector, low attack complexity, no privileges or user interaction required, and high confidentiality impact with no integrity or availability impact. The affected versions explicitly include >=4.0.0 <=4.4.1 and =4.5.0. Oracle has published a Critical Security Patch Update in August 2026 addressing this and other vulnerabilities, recommending customers apply patches promptly.
Potential Impact
Successful exploitation can lead to unauthorized access to critical or all data accessible through Helidon, compromising confidentiality. There is no reported impact on integrity or availability. The vulnerability is exploitable remotely without authentication, increasing risk.
Mitigation Recommendations
Oracle has released security patches as part of the August 2026 Critical Security Patch Update. Customers are strongly advised to apply these patches without delay and remain on actively supported versions. No indication exists that the vulnerability is already mitigated or requires no action. Patch availability details are provided in Oracle's advisory at https://www.oracle.com/security-alerts/cspuaug2026.html.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- oracle
- Date Reserved
- 2026-08-13T18:41:45.883Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.oracle.com/security-alerts/cspuaug2026.html","vendor":"Oracle"}]
Threat ID: 6a84cce2c6e8be0332c39505
Added to database: 08/18/2026, 21:21:38 UTC
Last enriched: 09/11/2026, 11:02:24 UTC
Last updated: 10/03/2026, 02:46:06 UTC
Views: 43
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