VulnSocial

CVE-2026-16558Disclosure

LOWCVSS 5.4 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-08-08: 1Technical Details · 2026-08-08: 108-08
Signal classification1 categories
Disclosure
1100.0%
Full discourse1 post
  • CyberSignal | Cybersecurity News@XQOPTRX
    Disclosure

    💥 Stored XSS in YMC Filter CVE-2026-16558 affects YMC Filter <3.12.8. Contributor-level users can store JavaScript through a vulnerable layout setting. The script can then execute in browsers of visitors viewing the affected filter. 🔎 Source: Rapid7 / MITRE CVE #XSS #WordPress #CVE #AppSec #CyberSecurity

    Post summary

    Discloses a stored XSS vulnerability (CVE-2026-16558) in YMC Filter versions <3.12.8, allowing contributors to inject JavaScript that executes in visitor browsers.

    00000139
    34 followersView on X

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