CVE-2021-24164Known exploitationNetwork attack vector

OAuth connection data disclosure via unchecked AJAX handler

Published Apr 5, 2021 · Updated Aug 3, 2024

Information disclosure in Saturday Drive Ninja Forms before 3.4.34.1 allows remote authenticated users to retrieve OAuth connection data. The wp_ajax_nf_oauth AJAX handler returns a connection URL containing the client secret and an existing client_id without checking caller capability. Subscriber-level access exposes the connection material; completing an attacker-controlled Add-on Manager connection also requires an administrator to follow a crafted link.

CVSS severity4.3
Medium
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Saturday Drive Ninja Forms before 3.4.34.1 allows remote authenticated users to retrieve OAuth connection data. The wp_ajax_nf_oauth AJAX handler returns a connection URL containing the client secret and an existing client_id without checking caller capability. Subscriber-level access exposes the connection material; completing an attacker-controlled Add-on Manager connection also requires an administrator to follow a crafted link.

The record

CVE
CVE-2021-24164
Published
Apr 5, 2021
Updated
Aug 3, 2024
Vendor
Saturday Drive
Product
Ninja Forms
Classifications
CWE-200, T1552
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 5, 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=3.4.34.1 <3.4.34.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Saturday Drive · Ninja Formsversion=3.4.34.1 <3.4.34.1

Published CVSS scores

4.3NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.0NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
7.7WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1552Unsecured Credentials

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.

Reported exploitation

Technologies

Your stack

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Your stack

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