Data modification and disclosure via undisclosed flaw
Published Aug 18, 2026 · Updated Aug 20, 2026
Improper access control in Imperative Web Server in Oracle Helidon 3.2.18 allows remote attackers to read and modify data via HTTP. Oracle has not published the request path, handler, or authorization check that mishandles untrusted input, so the exact locus and wrong operation remain undisclosed. Exploitation is unauthenticated and remote but requires human interaction, and the published impact is limited to unauthorized reads plus some update, insert, or delete access to Helidon-accessible data with scope change.
Summary
What happened
Improper access control in Imperative Web Server in Oracle Helidon 3.2.18 allows remote attackers to read and modify data via HTTP. Oracle has not published the request path, handler, or authorization check that mishandles untrusted input, so the exact locus and wrong operation remain undisclosed. Exploitation is unauthenticated and remote but requires human interaction, and the published impact is limited to unauthorized reads plus some update, insert, or delete access to Helidon-accessible data with scope change.
The record
- CVE
- CVE-2026-73869
- Published
- Aug 18, 2026
- Updated
- Aug 20, 2026
- Vendor
- Oracle
- Product
- Helidon
- Classifications
- CWE-284, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 18, 2026CVE publishedPublication date reported by the CVE source.
- Aug 20, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=3.2.18
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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