How severe is CVE-2021-24561?

CVE-2021-24561 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-24561 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24561?

CVE-2021-24561 affects Veronalabs Wp Sms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24561?

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

When was CVE-2021-24561 published?

CVE-2021-24561 was published on 2021-08-23 and last updated on 2026-06-17.

CVE-2021-24561

CVE-2021-24561 is a medium-severity vulnerability in Veronalabs Wp Sms with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Veronalabs Wp Sms
Published: 2021-08-23
Last modified: 2026-06-17

Description

The WP SMS WordPress plugin before 5.4.13 does not sanitise the "wp_group_name" parameter before outputting it back in the "Groups" page, leading to an Authenticated Stored Cross-Site Scripting issue

Frequently asked questions

What is CVE-2021-24561?: The WP SMS WordPress plugin before 5.4.13 does not sanitise the "wp_group_name" parameter before outputting it back in the "Groups" page, leading to an Authenticated Stored Cross-Site Scripting issue
How severe is CVE-2021-24561?: CVE-2021-24561 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-24561 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24561?: CVE-2021-24561 affects Veronalabs Wp Sms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24561?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24561 published?: CVE-2021-24561 was published on 2021-08-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:veronalabs:wp_sms:*:*:*:*:free:wordpress:*:*

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