CVE-2024-2544Network attack vector

Subscriber-level data tampering via unchecked AJAX actions

Published Jun 15, 2024 · Updated Apr 8, 2026

Missing authorization in Sygnoos Popup Builder 4.3.0 and earlier allows remote authenticated users to alter or delete subscriber data. Its AJAX action handlers dispatch subscriber deletion and import operations without checking the caller's WordPress capabilities. Subscriber-level access is sufficient to delete subscribers or import crafted subscriber data that produces stored cross-site scripting.

CVSS severity7.4
High
EPSS probability0.27%
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 Sygnoos Popup Builder 4.3.0 and earlier allows remote authenticated users to alter or delete subscriber data. Its AJAX action handlers dispatch subscriber deletion and import operations without checking the caller's WordPress capabilities. Subscriber-level access is sufficient to delete subscribers or import crafted subscriber data that produces stored cross-site scripting.

The record

CVE
CVE-2024-2544
Published
Jun 15, 2024
Updated
Apr 8, 2026
Vendor
Sygnoos
Product
Popup Builder
Classifications
CWE-862, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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 <=4.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Sygnoos · Popup Builderversion=0 <=4.3.0

Published CVSS scores

7.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
6.4NIST NVDCVSS: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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1565.001Stored Data Manipulation

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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