CVE-2021-24790Public exploitNetwork attack vector

Metadata deletion via unauthorized AJAX actions

Published Dec 13, 2021 · Updated Aug 3, 2024

Missing authorization in Contact Form Advanced Database 1.0.8 and earlier allows remote authenticated users to delete arbitrary metadata. The delete_cf7_data AJAX action accepts attacker-controlled record identifiers and metadata keys without a capability check, then passes supplied values to maybe_unserialize() without validation. Subscriber-level access is sufficient; object injection additionally requires a usable gadget chain in another installed plugin, while metadata deletion does not.

CVSS severity4.3
Medium
EPSS probability0.37%
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 Contact Form Advanced Database 1.0.8 and earlier allows remote authenticated users to delete arbitrary metadata. The delete_cf7_data AJAX action accepts attacker-controlled record identifiers and metadata keys without a capability check, then passes supplied values to maybe_unserialize() without validation. Subscriber-level access is sufficient; object injection additionally requires a usable gadget chain in another installed plugin, while metadata deletion does not.

The record

CVE
CVE-2021-24790
Published
Dec 13, 2021
Updated
Aug 3, 2024
Vendor
Christian A. Bautista
Product
Contact Form Advanced Database
Classifications
CWE-862, CWE-352
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.8 <=1.0.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Christian A. Bautista · Contact Form Advanced Databaseversion=1.0.8 <=1.0.8

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:P/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 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 exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
CWE-352Cross-Site Request Forgery (CSRF)

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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