CVE-2023-48827Public exploitNetwork attack vector

Authenticated page alteration via unsanitized saved fields

Published Dec 7, 2023 · Updated Aug 2, 2024

HTML injection in PHPJabbers Time Slots Booking Calendar 4.0 allows remote authenticated users to alter rendered panel content. The application saves HTML supplied through name, SMS configuration, calendar, title, country-name, and customer-name fields and renders it without neutralization. Panel access is required, and another user must view an affected page for the injected markup to affect that user's browser session.

CVSS severity5.4
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

HTML injection in PHPJabbers Time Slots Booking Calendar 4.0 allows remote authenticated users to alter rendered panel content. The application saves HTML supplied through name, SMS configuration, calendar, title, country-name, and customer-name fields and renders it without neutralization. Panel access is required, and another user must view an affected page for the injected markup to affect that user's browser session.

The record

CVE
CVE-2023-48827
Published
Dec 7, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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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