How severe is CVE-2021-24787?

CVE-2021-24787 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-24787 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24787?

CVE-2021-24787 affects Webventures Client Invoicing By Sprout Invoices. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24787?

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

When was CVE-2021-24787 published?

CVE-2021-24787 was published on 2021-11-17 and last updated on 2026-06-17.

CVE-2021-24787

CVE-2021-24787 is a medium-severity vulnerability in Webventures Client Invoicing By Sprout Invoices with a CVSS 3.x base score of 4.8. 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 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Webventures Client Invoicing By Sprout Invoices
Published: 2021-11-17
Last modified: 2026-06-17

Description

The Client Invoicing by Sprout Invoices WordPress plugin before 19.9.7 does not sanitise and escape some of its settings, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed

Frequently asked questions

What is CVE-2021-24787?: The Client Invoicing by Sprout Invoices WordPress plugin before 19.9.7 does not sanitise and escape some of its settings, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed
How severe is CVE-2021-24787?: CVE-2021-24787 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-24787 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24787?: CVE-2021-24787 affects Webventures Client Invoicing By Sprout Invoices. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24787?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24787 published?: CVE-2021-24787 was published on 2021-11-17 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/c89bf498-f384-49de-820e-6cbd70390db2

Affected products (1)

cpe:2.3:a:webventures:client_invoicing_by_sprout_invoices:*:*:*:*:*:wordpress:*:*

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