CVE-2026-73902: Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Helidon. in Oracle Corporation Helidon
CVE-2026-73902 is a vulnerability in Oracle Helidon versions 3.0.0 through 3.2.18 and 3.2.19 that allows an unauthenticated attacker with network access via HTTP to cause a denial of service (DoS) by hanging or crashing the Helidon server. The vulnerability affects the Imperative Web Server component of Oracle Fusion Middleware. It has a CVSS 3.1 base score of 7.5, indicating a high severity impact on availability.
AI Analysis
Technical Summary
This vulnerability in Oracle Helidon (component: Imperative Web Server) allows an unauthenticated attacker to cause a hang or frequent crash of the Helidon server via network access over HTTP, resulting in a complete denial of service. The affected versions are from 3.0.0 up to and including 3.2.18, and also version 3.2.19. The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, reflecting that the attack requires no privileges or user interaction but impacts availability severely. The vulnerability is identified as CWE-284 (Improper Access Control). Oracle has included this fix in their August 2026 Critical Security Patch Update.
Potential Impact
Successful exploitation allows an unauthenticated attacker to cause a complete denial of service by hanging or crashing the Helidon server, impacting availability. There is no confidentiality or integrity impact reported.
Mitigation Recommendations
Oracle has released a Critical Security Patch Update in August 2026 that addresses this vulnerability. Users should apply the official Oracle patches promptly to remediate this issue. Oracle strongly recommends staying on actively supported versions and applying security patches without delay. Patch availability details are provided in the Oracle advisory. No alternative mitigations or workarounds are specified.
CVE-2026-73902: Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Helidon. in Oracle Corporation Helidon
Description
CVE-2026-73902 is a vulnerability in Oracle Helidon versions 3.0.0 through 3.2.18 and 3.2.19 that allows an unauthenticated attacker with network access via HTTP to cause a denial of service (DoS) by hanging or crashing the Helidon server. The vulnerability affects the Imperative Web Server component of Oracle Fusion Middleware. It has a CVSS 3.1 base score of 7.5, indicating a high severity impact on availability.
CVSS v3.1
Score 7.5high
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 (component: Imperative Web Server) allows an unauthenticated attacker to cause a hang or frequent crash of the Helidon server via network access over HTTP, resulting in a complete denial of service. The affected versions are from 3.0.0 up to and including 3.2.18, and also version 3.2.19. The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, reflecting that the attack requires no privileges or user interaction but impacts availability severely. The vulnerability is identified as CWE-284 (Improper Access Control). Oracle has included this fix in their August 2026 Critical Security Patch Update.
Potential Impact
Successful exploitation allows an unauthenticated attacker to cause a complete denial of service by hanging or crashing the Helidon server, impacting availability. There is no confidentiality or integrity impact reported.
Mitigation Recommendations
Oracle has released a Critical Security Patch Update in August 2026 that addresses this vulnerability. Users should apply the official Oracle patches promptly to remediate this issue. Oracle strongly recommends staying on actively supported versions and applying security patches without delay. Patch availability details are provided in the Oracle advisory. No alternative mitigations or workarounds are specified.
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: 6a84cce7c6e8be0332c3965e
Added to database: 08/18/2026, 21:21:43 UTC
Last enriched: 09/11/2026, 11:01:52 UTC
Last updated: 10/03/2026, 14:46:10 UTC
Views: 69
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.