EUVD-2026-62153
GHSA-q3cm-vc7m-r9rf
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Network vector confirmed; AC:H reflects 'difficult to exploit' characterization; PR:N consistent with unauthenticated bypass; no integrity or availability impact described.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
1DescriptionCVE.org
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). The supported version that is affected is 3.2.19. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Helidon accessible data. CVSS 3.1 Base Score 5.9 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N).
AnalysisAI
Authentication bypass in Oracle Helidon 3.2.19 Imperative Web Server exposes critical data to unauthenticated network attackers via HTTP. The flaw, tagged as an Authentication Bypass by the reporter, allows a remote attacker without credentials to gain complete read access to all data accessible by the Helidon server instance. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network access to the Helidon Imperative Web Server over HTTP, and the target must be running exactly version 3.2.19. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 5.9 (Medium) is driven by AV:N (network reachable over HTTP) and C:H (full confidentiality loss), but significantly dampened by AC:H (high attack complexity), reflecting Oracle's own characterization of this as 'difficult to exploit.' There is no CISA KEV listing, no publicly known proof-of-concept, and no EPSS score was provided in the input. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An unauthenticated remote attacker targets an internet- or network-exposed Helidon 3.2.19 Imperative Web Server instance and crafts an HTTP request that satisfies the high-complexity exploitation condition - likely a specific request sequence, header manipulation, or timing element - bypassing authentication controls. Once the bypass succeeds, the attacker retrieves sensitive data served by the application, such as API responses, configuration data, or user records, without providing any credentials. |
| Remediation | Apply the patch provided in Oracle's Critical Security Patch Update for August 2026, available at https://www.oracle.com/security-alerts/cspuaug2026.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
View allShare
External POC / Exploit Code
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