Post metadata disclosure via REGEXP oracle
Published Sep 10, 2026 · Updated Sep 10, 2026
Missing authorization in Epsilon Web Manufactory WP Fast Total Search 1.82.284 and earlier lets remote attackers read post metadata. The plugin processes attacker-controlled meta_query regular expressions and exposes match results as an oracle, enabling extraction of arbitrary postmeta values without authentication. No account or user interaction is required; the observed consequence is confidentiality loss, not data modification or service interruption.
Summary
What happened
Missing authorization in Epsilon Web Manufactory WP Fast Total Search 1.82.284 and earlier lets remote attackers read post metadata. The plugin processes attacker-controlled meta_query regular expressions and exposes match results as an oracle, enabling extraction of arbitrary postmeta values without authentication. No account or user interaction is required; the observed consequence is confidentiality loss, not data modification or service interruption.
The record
- CVE
- CVE-2026-84821
- Published
- Sep 10, 2026
- Updated
- Sep 10, 2026
- Vendor
- Epsilon Web Manufactory
- Product
- WP Fast Total Search – The Power of Indexed Search
- Classifications
- CWE-862, CAPEC-180, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 10, 2026CVE publishedPublication date reported by the CVE source.
- Sep 10, 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=n/a <=1.82.284 changes=[{"at":"1.83.286","status":"unaffected"}]
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
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Weakness, pattern, technique
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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