CVE-2026-73935: 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-2026-73935 is a high-severity vulnerability in Oracle Helidon versions 4.0.0 through 4.5.1. 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 vulnerability in its August 2026 Critical Security Patch Update, which provides security patches for affected products.
AI Analysis
Technical Summary
This vulnerability affects the Helidon product of Oracle Fusion Middleware, specifically the Imperative Web Server component. Versions 4.0.0 through 4.5.1 are vulnerable. An unauthenticated attacker with network access via HTTP/2 can exploit this flaw to cause the Helidon server to hang or crash repeatedly, resulting in a complete denial of service. The CVSS 3.1 base score is 7.5, reflecting a high impact on availability with no impact on confidentiality or integrity. Oracle has addressed this vulnerability in its August 2026 Critical Security Patch Update, which includes patches for Helidon versions up to 4.5.2.
Potential Impact
Successful exploitation allows an unauthenticated attacker to cause a hang or frequent crash of the Helidon server, resulting in a denial of service condition. There is no impact on confidentiality or integrity. The vulnerability is exploitable remotely over the network via HTTP/2 without authentication.
Mitigation Recommendations
Oracle has released patches for this vulnerability as part of the August 2026 Critical Security Patch Update. Users should apply the security patches promptly to affected Helidon versions. Oracle strongly recommends remaining on actively supported versions and applying security patches without delay to mitigate this vulnerability.
CVE-2026-73935: 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-2026-73935 is a high-severity vulnerability in Oracle Helidon versions 4.0.0 through 4.5.1. 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 vulnerability in its August 2026 Critical Security Patch Update, which provides security patches for affected products.
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 Helidon product of Oracle Fusion Middleware, specifically the Imperative Web Server component. Versions 4.0.0 through 4.5.1 are vulnerable. An unauthenticated attacker with network access via HTTP/2 can exploit this flaw to cause the Helidon server to hang or crash repeatedly, resulting in a complete denial of service. The CVSS 3.1 base score is 7.5, reflecting a high impact on availability with no impact on confidentiality or integrity. Oracle has addressed this vulnerability in its August 2026 Critical Security Patch Update, which includes patches for Helidon versions up to 4.5.2.
Potential Impact
Successful exploitation allows an unauthenticated attacker to cause a hang or frequent crash of the Helidon server, resulting in a denial of service condition. There is no impact on confidentiality or integrity. The vulnerability is exploitable remotely over the network via HTTP/2 without authentication.
Mitigation Recommendations
Oracle has released patches for this vulnerability as part of the August 2026 Critical Security Patch Update. Users should apply the security patches promptly to affected Helidon versions. Oracle strongly recommends remaining on actively supported versions and applying security patches without delay to mitigate this vulnerability.
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: 6a84ccf0c6e8be0332c3983f
Added to database: 08/18/2026, 21:21:52 UTC
Last enriched: 09/11/2026, 10:34:06 UTC
Last updated: 10/03/2026, 02:46:06 UTC
Views: 84
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