CVE-2026-73874: Easily exploitable vulnerability allows low privileged 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. in Oracle Corporation Helidon
CVE-2026-73874 is a vulnerability in Oracle Helidon versions 4.0.0 through 4.4.1 and version 4.5.0 that allows a low privileged attacker with network access via HTTP to perform unauthorized read and write operations on accessible data. The vulnerability affects the Imperative Web Server component of Helidon. The CVSS 3.1 base score is 5.4, indicating a medium severity with impacts on confidentiality and integrity but no impact on availability. Oracle has included this vulnerability in its August 2026 Critical Security Patch Update.
AI Analysis
Technical Summary
This vulnerability in Oracle Helidon (Imperative Web Server component) allows an attacker with low privileges and network access via HTTP to compromise the system by unauthorized update, insert, or delete operations on some accessible data, as well as unauthorized read access to a subset of data. The CVSS 3.1 vector indicates network attack vector, low attack complexity, low privileges required, no user interaction, unchanged scope, and impacts on confidentiality and integrity only. The 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 advisory.
Potential Impact
Successful exploitation allows unauthorized modification (update, insert, delete) and unauthorized reading of some Helidon accessible data, impacting confidentiality and integrity. There is no impact on availability. The vulnerability requires network access via HTTP and low privileges, making it relatively easy to exploit.
Mitigation Recommendations
Oracle has released security patches as part of the August 2026 Critical Security Patch Update that address this vulnerability. It is strongly recommended to apply these patches promptly on affected Helidon versions. Staying on actively supported versions and applying Oracle patches without delay mitigates the risk. No additional vendor advisory states that no action is required.
CVE-2026-73874: Easily exploitable vulnerability allows low privileged 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. in Oracle Corporation Helidon
Description
CVE-2026-73874 is a vulnerability in Oracle Helidon versions 4.0.0 through 4.4.1 and version 4.5.0 that allows a low privileged attacker with network access via HTTP to perform unauthorized read and write operations on accessible data. The vulnerability affects the Imperative Web Server component of Helidon. The CVSS 3.1 base score is 5.4, indicating a medium severity with impacts on confidentiality and integrity but no impact on availability. Oracle has included this vulnerability in its August 2026 Critical Security Patch Update.
CVSS v3.1
Score 5.4medium
Affected software
Oracle Corporation
Helidon
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Oracle Helidon (Imperative Web Server component) allows an attacker with low privileges and network access via HTTP to compromise the system by unauthorized update, insert, or delete operations on some accessible data, as well as unauthorized read access to a subset of data. The CVSS 3.1 vector indicates network attack vector, low attack complexity, low privileges required, no user interaction, unchanged scope, and impacts on confidentiality and integrity only. The 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 advisory.
Potential Impact
Successful exploitation allows unauthorized modification (update, insert, delete) and unauthorized reading of some Helidon accessible data, impacting confidentiality and integrity. There is no impact on availability. The vulnerability requires network access via HTTP and low privileges, making it relatively easy to exploit.
Mitigation Recommendations
Oracle has released security patches as part of the August 2026 Critical Security Patch Update that address this vulnerability. It is strongly recommended to apply these patches promptly on affected Helidon versions. Staying on actively supported versions and applying Oracle patches without delay mitigates the risk. No additional vendor advisory states that no action is required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- oracle
- Date Reserved
- 2026-08-13T18:41:45.882Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.oracle.com/security-alerts/cspuaug2026.html","vendor":"Oracle"}]
Threat ID: 6a84ccdfc6e8be0332c39463
Added to database: 08/18/2026, 21:21:35 UTC
Last enriched: 09/11/2026, 11:18:28 UTC
Last updated: 10/02/2026, 02:46:06 UTC
Views: 25
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.