Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-81655
Unknown Ad Inserter — Ad Inserter 2.8.12 - 2.8.18 - Subscriber+ RCE / Stored XSS via Global Custom Fields
AV AC PR UI S C I A CVSS EPSS %ile KEV
N H L N U H H H 7.5 .0023 12.3 —
AFFECTED
Product Versions Fixed
Ad Inserter 2.8.12 – —
TIMELINE
Aug 27 Reserved by WPScan
Sep 27 Published (CNA: WPScan)
Sep 28 EXPLOIT PUBLISHED — CVE-2026-81655 (Unknown Ad Inserter). Public exploit reference added.
Description
The Ad Inserter WordPress plugin before 2.8.19 does not correctly restrict access to one of its settings pages, making it reachable by every logged in user under a configuration its own settings allow, and does not filter the content saved there, allowing users with a role as low as subscriber to store code which is then executed as PHP or served unescaped to site visitors.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| August 27, 2026 | Reserved | Reserved by WPScan |
| September 27, 2026 | Published | Published (CNA: WPScan) |
| September 28, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-81655 (Unknown Ad Inserter). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Unknown | Ad Inserter | — | 2.8.12 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-81655 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 Saturday, October 3, 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.