Subscriber-level settings changes via missing authorization
Published Aug 31, 2026 · Updated Sep 1, 2026
Missing authorization in WPExperts Post SMTP 4.0.0-beta.1 allows remote authenticated users to change plugin settings. Public sources identify subscriber-level access as sufficient but do not disclose the affected handler or the authorization check it omits. Exploitation requires a WordPress subscriber account and can alter Post SMTP configuration; no broader impact is documented.
Summary
What happened
Missing authorization in WPExperts Post SMTP 4.0.0-beta.1 allows remote authenticated users to change plugin settings. Public sources identify subscriber-level access as sufficient but do not disclose the affected handler or the authorization check it omits. Exploitation requires a WordPress subscriber account and can alter Post SMTP configuration; no broader impact is documented.
The record
- CVE
- CVE-2026-81278
- Published
- Aug 31, 2026
- Updated
- Sep 1, 2026
- Vendor
- WPExperts
- Product
- Post SMTP
- Classifications
- CWE-862
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 31, 2026CVE publishedPublication date reported by the CVE source.
- Sep 1, 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=4.0.0 <=beta.1 changes=[{"at":"4.0.1","status":"unaffected"}]
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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