CVE-2024-13405Network attack vector

IP address blocking via missing nonce validation

Published Feb 19, 2025 · Updated Apr 8, 2026

Cross-site request forgery in Apptivo Business Site CRM 5.3 and earlier allows remote attackers to block IP addresses via forged requests. The awp_ip_deny page processes a state-changing request without correctly validating its WordPress nonce, so attacker-supplied block actions are accepted. Exploitation requires an unauthenticated remote attacker to induce a logged-in site administrator to submit the forged request, causing chosen addresses to be denied.

CVSS severity4.3
Medium
EPSS probability0.18%
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 Apptivo Business Site CRM 5.3 and earlier allows remote attackers to block IP addresses via forged requests. The awp_ip_deny page processes a state-changing request without correctly validating its WordPress nonce, so attacker-supplied block actions are accepted. Exploitation requires an unauthenticated remote attacker to induce a logged-in site administrator to submit the forged request, causing chosen addresses to be denied.

The record

CVE
CVE-2024-13405
Published
Feb 19, 2025
Updated
Apr 8, 2026
Vendor
Apptivo
Product
Business Site CRM
Classifications
CWE-352, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 19, 2025CVE 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 <=5.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apptivo · Business Site CRMversion=0 <=5.3

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204.001Malicious Link

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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