Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV N L L R C L L N 5.4 .0013 3.3 —
AFFECTED Product Versions Fixed YMC Filter 3.6.0 – —
TIMELINE Jul 22 Reserved by WPScan Aug 8 Published (CNA: WPScan) Aug 9 EXPLOIT PUBLISHED — CVE-2026-16558 (Unknown YMC Filter). Public exploit reference added.
The YMC Filter WordPress plugin before 3.12.8 does not sanitize and escape a layout builder setting before outputting it on a public endpoint, and does not verify object ownership when the setting is saved, allowing users with the Contributor role and above to store JavaScript that executes in the browser of any visitor viewing an affected filter.
| Date | Event | Detail |
|---|---|---|
| July 22, 2026 | Reserved | Reserved by WPScan |
| August 8, 2026 | Published | Published (CNA: WPScan) |
| August 9, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-16558 (Unknown YMC Filter). Public exploit reference added. |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| Unknown | YMC Filter | — | 3.6.0 | — |
Authoritative record: CVE-2026-16558 at cve.org
Weaknesses: CWE-79
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-16558 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 Wednesday, August 19, 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.