How severe is CVE-2021-24657?

CVE-2021-24657 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-24657 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24657?

CVE-2021-24657 affects Limit Login Attempts Project Limit Login Attempts. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24657?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-24657 published?

CVE-2021-24657 was published on 2021-09-20 and last updated on 2026-06-17.

CVE-2021-24657

CVE-2021-24657 is a medium-severity vulnerability in Limit Login Attempts Project Limit Login Attempts with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Limit Login Attempts Project Limit Login Attempts
Published: 2021-09-20
Last modified: 2026-06-17

Description

The Limit Login Attempts WordPress plugin before 4.0.50 does not escape the IP addresses (which can be controlled by attacker via headers such as X-Forwarded-For) of attempted logins before outputting them in the reports table, leading to an Unauthenticated Stored Cross-Site Scripting issue.

Frequently asked questions

What is CVE-2021-24657?: The Limit Login Attempts WordPress plugin before 4.0.50 does not escape the IP addresses (which can be controlled by attacker via headers such as X-Forwarded-For) of attempted logins before outputting them in the reports table, leading to an Unauthenticated Stored Cross-Site Scripting issue.
How severe is CVE-2021-24657?: CVE-2021-24657 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-24657 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24657?: CVE-2021-24657 affects Limit Login Attempts Project Limit Login Attempts. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24657?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24657 published?: CVE-2021-24657 was published on 2021-09-20 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/c789ca04-d88c-4789-8be1-812888f0c8f8

Affected products (1)

cpe:2.3:a:limit_login_attempts_project:limit_login_attempts:*:*:*:*:*:wordpress:*:*

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