CVE-2026-8791Network attack vector

Subscriber-level stored XSS via unchecked option update

Published Jul 29, 2026 · Updated Jul 29, 2026

Stored XSS in Booking System Trafft 1.0.17 and earlier allows remote authenticated users to execute JavaScript via a crafted setting. The trafftSetOptions handler accepts bookingWebsiteUrl from the set_options AJAX action and writes it to trafft_option without a capability check; trafftAdminAssets later loads embed.js from that URL. Subscriber-level access and agency mode are required, and any page containing the booking shortcode loads attacker-hosted code in visitors’ browsers.

CVSS severity6.4
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Booking System Trafft 1.0.17 and earlier allows remote authenticated users to execute JavaScript via a crafted setting. The trafftSetOptions handler accepts bookingWebsiteUrl from the set_options AJAX action and writes it to trafft_option without a capability check; trafftAdminAssets later loads embed.js from that URL. Subscriber-level access and agency mode are required, and any page containing the booking shortcode loads attacker-hosted code in visitors’ browsers.

The record

CVE
CVE-2026-8791
Published
Jul 29, 2026
Updated
Jul 29, 2026
Vendor
Melograno Venture Studio
Product
Booking System Trafft
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 1.0.17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Melograno Venture Studio · Booking System Trafftversion=<= 1.0.17

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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