CVE-2026-73903: 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. in Oracle Corporation Helidon
CVE-2026-73903 is a high-severity vulnerability in Oracle Helidon versions 4.0.0 through 4.5.0 and version 4.5.1. It allows an unauthenticated attacker with network access via HTTP to perform unauthorized creation, deletion, or modification of critical or all accessible data in Helidon. The vulnerability affects the Imperative Web Server component and has a CVSS 3.1 base score of 7.5, indicating significant integrity impact without confidentiality or availability loss. Oracle has included this vulnerability in its August 2026 Critical Security Patch Update, which provides security patches for affected versions. Users are strongly advised to apply the official patches promptly to mitigate the risk.
AI Analysis
Technical Summary
This vulnerability in Oracle Helidon (Imperative Web Server component) affects versions 4.0.0 through 4.5.0 and 4.5.1. It allows an unauthenticated attacker with network access via HTTP to compromise the system, resulting in unauthorized creation, deletion, or modification of critical data or all data accessible through Helidon. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N) indicates network attack vector, low attack complexity, no privileges or user interaction required, unchanged scope, no confidentiality impact, high integrity impact, and no availability impact. Oracle has addressed this vulnerability in its August 2026 Critical Security Patch Update, which includes patches for affected Helidon versions.
Potential Impact
Successful exploitation allows an unauthenticated remote attacker to modify critical data or all data accessible via Helidon, compromising data integrity. There is no impact on confidentiality or availability according to the CVSS vector. This could lead to unauthorized data manipulation within the affected Helidon environment.
Mitigation Recommendations
Oracle has released security patches for this vulnerability as part of the August 2026 Critical Security Patch Update. Users should apply the official patches for Helidon versions 4.0.0 through 4.5.2 promptly. Oracle strongly recommends remaining on actively supported versions and applying security patches without delay to prevent exploitation.
CVE-2026-73903: 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. in Oracle Corporation Helidon
Description
CVE-2026-73903 is a high-severity vulnerability in Oracle Helidon versions 4.0.0 through 4.5.0 and version 4.5.1. It allows an unauthenticated attacker with network access via HTTP to perform unauthorized creation, deletion, or modification of critical or all accessible data in Helidon. The vulnerability affects the Imperative Web Server component and has a CVSS 3.1 base score of 7.5, indicating significant integrity impact without confidentiality or availability loss. Oracle has included this vulnerability in its August 2026 Critical Security Patch Update, which provides security patches for affected versions. Users are strongly advised to apply the official patches promptly to mitigate the risk.
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 in Oracle Helidon (Imperative Web Server component) affects versions 4.0.0 through 4.5.0 and 4.5.1. It allows an unauthenticated attacker with network access via HTTP to compromise the system, resulting in unauthorized creation, deletion, or modification of critical data or all data accessible through Helidon. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N) indicates network attack vector, low attack complexity, no privileges or user interaction required, unchanged scope, no confidentiality impact, high integrity impact, and no availability impact. Oracle has addressed this vulnerability in its August 2026 Critical Security Patch Update, which includes patches for affected Helidon versions.
Potential Impact
Successful exploitation allows an unauthenticated remote attacker to modify critical data or all data accessible via Helidon, compromising data integrity. There is no impact on confidentiality or availability according to the CVSS vector. This could lead to unauthorized data manipulation within the affected Helidon environment.
Mitigation Recommendations
Oracle has released security patches for this vulnerability as part of the August 2026 Critical Security Patch Update. Users should apply the official patches for Helidon versions 4.0.0 through 4.5.2 promptly. Oracle strongly recommends remaining on actively supported versions and applying security patches without delay to prevent exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- oracle
- Date Reserved
- 2026-08-13T18:41:45.886Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.oracle.com/security-alerts/cspuaug2026.html","vendor":"Oracle"}]
Threat ID: 6a84cce7c6e8be0332c39660
Added to database: 08/18/2026, 21:21:43 UTC
Last enriched: 09/11/2026, 10:50:25 UTC
Last updated: 10/03/2026, 02:46:06 UTC
Views: 70
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