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Not in CISA KEV
HIGH severity

CVE-2026-66457 — Events Manager

HIGH

CVE-2026-66457 is a high-severity (CVSS 7.1) Cross-site Scripting (XSS) vulnerability in Pixelite Events Manager. Versions up to 7.4.2 are affected; the records list no fixed version yet, so check the vendor advisory below.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Pixelite Events Manager events-manager allows Reflected XSS.This issue affects…

Published
Updated
Affected
1 product
Patched
See advisory
Exploits
None indexed
Exploitation data as of Nov 2, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-66457.

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs17th percentile — riskier than 17% of all scored CVEsHighest risk
0.00%0.25%0.50%0.75%0.2%0.3%0.3%0.3%Sep 26Nov 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Pixelite Events Manager events-manager allows Reflected XSS.This issue affects Events Manager: from n/a through 7.4.2.

Affected Products

1 product · 1 configurations
Application
Events ManagerPixelite
≤ 7.4.2
1 version
0

Detection & mitigation playbook

Vendor / appliance

  1. Detect

    Inventory every Pixelite Events Manager deployment and check each version against the affected-products list above.

  2. Remediation status

    The records we use list no fixed version for CVE-2026-66457 (versions up to 7.4.2 are affected). Check the Pixelite Events Manager advisory for a patched release, and apply the workarounds below until you can upgrade.

  3. Mitigate without a patch

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Frequently Asked Questions

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Pixelite Events Manager events-manager allows Reflected XSS.This issue affects Events Manager: from n/a through 7.4.2.
O3 Security · Runtime Protection

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CVE-2026-66457: Events Manager XSS (High 7.1)