CVE-2026-73934: Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 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-2026-73934 is a high-severity vulnerability in Oracle Helidon versions 3.0.0 through 3.2.18 and 3.2.19. It allows an unauthenticated attacker with network access via HTTP/2 to cause a denial of service by hanging or crashing the Helidon server. The vulnerability impacts availability but does not affect confidentiality or integrity. Oracle has included this fix in its August 2026 Critical Security Patch Update.
AI Analysis
Technical Summary
This vulnerability affects the Imperative Web Server component of Oracle Helidon. An unauthenticated attacker can exploit this flaw over HTTP/2 to cause a hang or repeated crash, resulting in a complete denial of service. The CVSS 3.1 base score is 7.5, reflecting a network attack vector with low complexity and no privileges or user interaction required. The vulnerability impacts availability only (no confidentiality or integrity impact). Oracle's August 2026 Critical Security Patch Update addresses this issue for affected Helidon versions.
Potential Impact
Successful exploitation results in denial of service by causing the Helidon server to hang or crash repeatedly. There is no impact on confidentiality or integrity. The vulnerability can be exploited remotely without authentication, making it a significant availability risk for affected deployments.
Mitigation Recommendations
Oracle has released a security patch for this vulnerability as part of the August 2026 Critical Security Patch Update. Users should apply the official patch promptly to remediate the issue. No alternative mitigations or workarounds are specified by Oracle. Customers are strongly advised to remain on actively supported versions and apply security patches without delay.
CVE-2026-73934: Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 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-2026-73934 is a high-severity vulnerability in Oracle Helidon versions 3.0.0 through 3.2.18 and 3.2.19. It allows an unauthenticated attacker with network access via HTTP/2 to cause a denial of service by hanging or crashing the Helidon server. The vulnerability impacts availability but does not affect confidentiality or integrity. Oracle has included this fix in its August 2026 Critical Security Patch Update.
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 unauthenticated attacker can exploit this flaw over HTTP/2 to cause a hang or repeated crash, resulting in a complete denial of service. The CVSS 3.1 base score is 7.5, reflecting a network attack vector with low complexity and no privileges or user interaction required. The vulnerability impacts availability only (no confidentiality or integrity impact). Oracle's August 2026 Critical Security Patch Update addresses this issue for affected Helidon versions.
Potential Impact
Successful exploitation results in denial of service by causing the Helidon server to hang or crash repeatedly. There is no impact on confidentiality or integrity. The vulnerability can be exploited remotely without authentication, making it a significant availability risk for affected deployments.
Mitigation Recommendations
Oracle has released a security patch for this vulnerability as part of the August 2026 Critical Security Patch Update. Users should apply the official patch promptly to remediate the issue. No alternative mitigations or workarounds are specified by Oracle. Customers are strongly advised to remain on actively supported versions and apply security patches without delay.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- oracle
- Date Reserved
- 2026-08-13T18:41:45.891Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.oracle.com/security-alerts/cspuaug2026.html","vendor":"Oracle"}]
Threat ID: 6a84ccf0c6e8be0332c3983d
Added to database: 08/18/2026, 21:21:52 UTC
Last enriched: 09/11/2026, 10:34:13 UTC
Last updated: 10/02/2026, 02:46:06 UTC
Views: 37
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