CVE-2021-24998Network attack vector

Weak account passwords via str_shuffle generation

Published Dec 27, 2021 · Updated Aug 3, 2024

Weak randomness in WP Directory Kit Simple JWT Login before 3.3.0 allows remote attackers to create accounts with weak generated passwords. The registration path uses PHP's str_shuffle function to generate a password instead of a cryptographically secure random generator. The condition exists only when registration and optional random-password generation are enabled; successful password prediction compromises the created account.

CVSS severity7.5
High
EPSS probability1.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak randomness in WP Directory Kit Simple JWT Login before 3.3.0 allows remote attackers to create accounts with weak generated passwords. The registration path uses PHP's str_shuffle function to generate a password instead of a cryptographically secure random generator. The condition exists only when registration and optional random-password generation are enabled; successful password prediction compromises the created account.

The record

CVE
CVE-2021-24998
Published
Dec 27, 2021
Updated
Aug 3, 2024
Vendor
WP Directory Kit
Product
Simple JWT Login
Classifications
CWE-330, T1136.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 27, 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=0 <3.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WP Directory Kit · Simple JWT Loginversion=0 <3.3.0

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:P/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-330Use of Insufficiently Random Values
T1136.001Create Account: Local Account

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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