CVE-2021-24685

CVE-2021-24685 is a medium-severity vulnerability in Flat Preloader Project Flat Preloader 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

Description

The Flat Preloader WordPress plugin before 1.5.4 does not enforce nonce checks when saving its settings, as well as does not sanitise and escape them, which could allow attackers to a make logged in admin change them with a Cross-Site Scripting payload (triggered either in the frontend or backend depending on the payload)

Frequently asked questions

What is CVE-2021-24685?
The Flat Preloader WordPress plugin before 1.5.4 does not enforce nonce checks when saving its settings, as well as does not sanitise and escape them, which could allow attackers to a make logged in admin change them with a Cross-Site Scripting payload (triggered either in the frontend or backend depending on the payload)
How severe is CVE-2021-24685?
CVE-2021-24685 has a CVSS 3.x base score of 5.4, 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-2021-24685 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24685?
CVE-2021-24685 affects Flat Preloader Project Flat Preloader. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24685?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24685 published?
CVE-2021-24685 was published on 2021-11-01 and last updated on 2026-06-17.

References

Affected products (1)

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