CVE-2026-52838Public exploitNetwork attack vector

Stored XSS via unsanitized disabled-booking message

Published Jul 14, 2026 · Updated Jul 14, 2026

Stored XSS in Easy!Appointments before 1.6.0 allows remote authenticated users to run JavaScript in visitors' browsers. The booking settings controller stores disable_booking_message rich text without sanitization, and booking_message.php renders it without escaping. Administrator access and disabled-booking mode are required; opening the public page then executes the stored script in each visitor's browser.

CVSS severity2.6
Low
EPSS probability0.24%
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 Easy!Appointments before 1.6.0 allows remote authenticated users to run JavaScript in visitors' browsers. The booking settings controller stores disable_booking_message rich text without sanitization, and booking_message.php renders it without escaping. Administrator access and disabled-booking mode are required; opening the public page then executes the stored script in each visitor's browser.

The record

CVE
CVE-2026-52838
Published
Jul 14, 2026
Updated
Jul 14, 2026
Vendor
Easy Appointments
Product
Easy Appointments
Classifications
CWE-79, T1189
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 14, 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=< 1.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Easy Appointments · Easy Appointmentsversion=< 1.6.0

Published CVSS scores

2.6GitHubCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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