Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-89327
Unknown FluentBoards — FluentBoards < 2.0.15 - Board Member+ Comment Author Spoofing via 'comment_by' Parameter
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L H N U L L N 3.8 .0026 15.5 —
AFFECTED
Product Versions Fixed
FluentBoards unspecified —
TIMELINE
Sep 11 Reserved by WPScan
Sep 16 Published (CNA: WPScan)
Sep 17 EXPLOIT PUBLISHED — CVE-2026-89327 (Unknown FluentBoards). Public exploit reference added.
Description
The FluentBoards WordPress plugin before 2.0.15 does not verify that a board member submitting a comment is the user the comment is attributed to, allowing any board member to post comments that appear to be authored by another user, including administrators.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| September 11, 2026 | Reserved | Reserved by WPScan |
| September 16, 2026 | Published | Published (CNA: WPScan) |
| September 17, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-89327 (Unknown FluentBoards). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Unknown | FluentBoards | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-89327 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.