Subscriber-level password disclosure via unrestricted REST response
Published Sep 2, 2026 · Updated Sep 2, 2026
Information disclosure in Gutentor before 4.0.6 allows remote authenticated users to read protected-post passwords through REST. Gutentor_Self_Api_Handler copies each post's plaintext post_password into its JSON response without requiring edit context or edit_post capability. A Subscriber account, an active plugin, and at least one password-protected post are sufficient to disclose the password and expose the protected content.
Summary
What happened
Information disclosure in Gutentor before 4.0.6 allows remote authenticated users to read protected-post passwords through REST. Gutentor_Self_Api_Handler copies each post's plaintext post_password into its JSON response without requiring edit context or edit_post capability. A Subscriber account, an active plugin, and at least one password-protected post are sufficient to disclose the password and expose the protected content.
The record
- CVE
- CVE-2026-16983
- Published
- Sep 2, 2026
- Updated
- Sep 2, 2026
- Vendor
- Acme Information Technology
- Product
- Gutentor – Gutenberg Blocks – Page Builder for Gutenberg Editor
- Classifications
- CWE-200, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 2, 2026CVE publishedPublication date reported by the CVE source.
- Sep 2, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <4.0.6
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.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo