CVE-2026-73877: Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Helidon accessible data. in Oracle Corporation Helidon
CVE-2026-73877 is a medium severity vulnerability in Oracle Helidon version 3.2.18. It allows an unauthenticated attacker with network access via HTTP to gain unauthorized read access to some data accessible by Helidon. The vulnerability has a CVSS 3.1 base score of 5.3, indicating a confidentiality impact without integrity or availability effects. Oracle has included this vulnerability in its August 2026 Critical Security Patch Update, which addresses multiple products including Helidon. The vendor strongly recommends applying the available patches promptly to mitigate this and other vulnerabilities.
AI Analysis
Technical Summary
This vulnerability affects Oracle Helidon version 3.2.18, specifically the Imperative Web Server component. It allows an unauthenticated attacker with network access via HTTP to compromise Helidon and obtain unauthorized read access to a subset of accessible data. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N) indicates that the attack requires no privileges or user interaction and has low complexity, impacting confidentiality only. Oracle has published this issue as part of its August 2026 Critical Security Patch Update, which includes patches for Helidon versions 1.4.19, 1.4.20, 3.2.18, 3.2.19, 3.2.20, and others. The advisory urges customers to remain on supported versions and apply patches without delay.
Potential Impact
Successful exploitation allows an unauthenticated attacker to read some data accessible by Helidon without authorization, impacting confidentiality. There is no impact on integrity or availability. The vulnerability is remotely exploitable over the network via HTTP and requires no user interaction or privileges.
Mitigation Recommendations
Oracle has released patches for this vulnerability as part of the August 2026 Critical Security Patch Update. Affected users should apply the relevant patches promptly to remediate the issue. Oracle strongly recommends staying on actively supported versions and applying security patches without delay. Patch status is confirmed by the vendor advisory. No alternative mitigations are specified.
CVE-2026-73877: Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Helidon accessible data. in Oracle Corporation Helidon
Description
CVE-2026-73877 is a medium severity vulnerability in Oracle Helidon version 3.2.18. It allows an unauthenticated attacker with network access via HTTP to gain unauthorized read access to some data accessible by Helidon. The vulnerability has a CVSS 3.1 base score of 5.3, indicating a confidentiality impact without integrity or availability effects. Oracle has included this vulnerability in its August 2026 Critical Security Patch Update, which addresses multiple products including Helidon. The vendor strongly recommends applying the available patches promptly to mitigate this and other vulnerabilities.
CVSS v3.1
Score 5.3medium
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects Oracle Helidon version 3.2.18, specifically the Imperative Web Server component. It allows an unauthenticated attacker with network access via HTTP to compromise Helidon and obtain unauthorized read access to a subset of accessible data. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N) indicates that the attack requires no privileges or user interaction and has low complexity, impacting confidentiality only. Oracle has published this issue as part of its August 2026 Critical Security Patch Update, which includes patches for Helidon versions 1.4.19, 1.4.20, 3.2.18, 3.2.19, 3.2.20, and others. The advisory urges customers to remain on supported versions and apply patches without delay.
Potential Impact
Successful exploitation allows an unauthenticated attacker to read some data accessible by Helidon without authorization, impacting confidentiality. There is no impact on integrity or availability. The vulnerability is remotely exploitable over the network via HTTP and requires no user interaction or privileges.
Mitigation Recommendations
Oracle has released patches for this vulnerability as part of the August 2026 Critical Security Patch Update. Affected users should apply the relevant patches promptly to remediate the issue. Oracle strongly recommends staying on actively supported versions and applying security patches without delay. Patch status is confirmed by the vendor advisory. No alternative mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- oracle
- Date Reserved
- 2026-08-13T18:41:45.882Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.oracle.com/security-alerts/cspuaug2026.html","vendor":"Oracle"}]
Threat ID: 6a84ccdfc6e8be0332c39469
Added to database: 08/18/2026, 21:21:35 UTC
Last enriched: 08/18/2026, 22:20:57 UTC
Last updated: 08/18/2026, 23:09:34 UTC
Views: 2
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