CVE-2021-24804Public exploitNetwork attack vector

Administrator takeover via missing settings nonce

Published Nov 17, 2021 · Updated Aug 3, 2024

Cross-Site Request Forgery in Simple JWT Login before 3.2.1 allows remote attackers to alter WordPress plugin settings through a logged-in administrator's browser. The settings-save handler accepts requests without verifying a WordPress nonce, allowing crafted forms to change the HMAC secret, enable registration, or set new users to Administrator. Exploitation requires an administrator to visit attacker-controlled content; successful changes can permit unauthenticated account creation and site takeover.

CVSS severity8.8
High
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Cross-Site Request Forgery in Simple JWT Login before 3.2.1 allows remote attackers to alter WordPress plugin settings through a logged-in administrator's browser. The settings-save handler accepts requests without verifying a WordPress nonce, allowing crafted forms to change the HMAC secret, enable registration, or set new users to Administrator. Exploitation requires an administrator to visit attacker-controlled content; successful changes can permit unauthenticated account creation and site takeover.

The record

CVE
CVE-2021-24804
Published
Nov 17, 2021
Updated
Aug 3, 2024
Vendor
WP Directory Kit
Product
Simple JWT Login
Classifications
CWE-352, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 17, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=3.2.1 <3.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WP Directory Kit · Simple JWT Loginversion=3.2.1 <3.2.1

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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 exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1189Drive-by Compromise

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo