CVE-2024-54354Network attack vector

Stored XSS via unchecked AJAX task updates

Published Dec 16, 2024 · Updated Apr 28, 2026

Missing authorization in Termin-Kalender 0.99.47 and earlier allows remote authenticated users to store cross-site scripting payloads. The wp_ajax_todo_list_update_tasks AJAX handler updates task-list data without checking the caller’s WordPress capability before accepting attacker-controlled content. Subscriber-level access is sufficient, and execution requires another user to view the stored content; the same action also permits unauthorized task-list modification.

CVSS severity6.5
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Termin-Kalender 0.99.47 and earlier allows remote authenticated users to store cross-site scripting payloads. The wp_ajax_todo_list_update_tasks AJAX handler updates task-list data without checking the caller’s WordPress capability before accepting attacker-controlled content. Subscriber-level access is sufficient, and execution requires another user to view the stored content; the same action also permits unauthorized task-list modification.

The record

CVE
CVE-2024-54354
Published
Dec 16, 2024
Updated
Apr 28, 2026
Vendor
beat.k
Product
Termin-Kalender
Classifications
CWE-862, CAPEC-592, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 16, 2024CVE 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=0 <=0.99.47 changes=[{"at":"1.00.04","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

beat.k · Termin-Kalenderversion=0 <=0.99.47 changes=[{"at":"1.00.04","status":"unaffected"}]

Published CVSS scores

6.5PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

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-862Missing Authorization
CAPEC-592Stored XSS
T1059.007JavaScript/JScript

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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