How severe is CVE-2021-24782?

CVE-2021-24782 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-2021-24782 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-2021-24782?

CVE-2021-24782 affects Flex Local Fonts Project Flex Local Fonts. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24782?

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

When was CVE-2021-24782 published?

CVE-2021-24782 was published on 2021-12-13 and last updated on 2026-06-17.

CVE-2021-24782

CVE-2021-24782 is a medium-severity vulnerability in Flex Local Fonts Project Flex Local Fonts 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: Flex Local Fonts Project Flex Local Fonts
Published: 2021-12-13
Last modified: 2026-06-17

Description

The Flex Local Fonts WordPress plugin through 1.0.0 does not escape the Class Name field when adding a font, which could allow hight privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.

Frequently asked questions

What is CVE-2021-24782?: The Flex Local Fonts WordPress plugin through 1.0.0 does not escape the Class Name field when adding a font, which could allow hight privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.
How severe is CVE-2021-24782?: CVE-2021-24782 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-2021-24782 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-2021-24782?: CVE-2021-24782 affects Flex Local Fonts Project Flex Local Fonts. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24782?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24782 published?: CVE-2021-24782 was published on 2021-12-13 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/5cd846df-1d8b-488d-a691-b76850e8687a

Affected products (1)

cpe:2.3:a:flex_local_fonts_project:flex_local_fonts:*:*:*:*:*:wordpress:*:*

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