CVE-2023-48744Network attack vector

Calendar changes via CSRF

Published Nov 30, 2023 · Updated Apr 28, 2026

Cross-site request forgery in Availability Calendar through 1.2.6 allows remote attackers to alter calendar data via crafted requests. The vendor record does not disclose the affected endpoint or the exact untrusted operation. Exploitation requires a victim authenticated to the WordPress site to load the request, and the documented impact is unauthorized state changes rather than demonstrated data disclosure or service interruption.

CVSS severity8.8
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in Availability Calendar through 1.2.6 allows remote attackers to alter calendar data via crafted requests. The vendor record does not disclose the affected endpoint or the exact untrusted operation. Exploitation requires a victim authenticated to the WordPress site to load the request, and the documented impact is unauthorized state changes rather than demonstrated data disclosure or service interruption.

The record

CVE
CVE-2023-48744
Published
Nov 30, 2023
Updated
Apr 28, 2026
Vendor
Offshore Web Master
Product
Availability Calendar
Classifications
CWE-352, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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=n/a <=1.2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Offshore Web Master · Availability Calendarversion=n/a <=1.2.6

Published CVSS scores

5.4PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1190Exploitation of Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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