How severe is CVE-2021-25091?

CVE-2021-25091 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-2021-25091 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-25091?

CVE-2021-25091 affects Ylefebvre Link Library. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-25091?

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

When was CVE-2021-25091 published?

CVE-2021-25091 was published on 2022-02-01 and last updated on 2026-06-17.

CVE-2021-25091

CVE-2021-25091 is a medium-severity vulnerability in Ylefebvre Link Library 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: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Ylefebvre Link Library
Published: 2022-02-01
Last modified: 2026-06-17

Description

The Link Library WordPress plugin before 7.2.9 does not sanitise and escape the settingscopy parameter before outputting it back in an admin page, leading to a Reflected Cross-Site Scripting

Frequently asked questions

What is CVE-2021-25091?: The Link Library WordPress plugin before 7.2.9 does not sanitise and escape the settingscopy parameter before outputting it back in an admin page, leading to a Reflected Cross-Site Scripting
How severe is CVE-2021-25091?: CVE-2021-25091 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-2021-25091 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-25091?: CVE-2021-25091 affects Ylefebvre Link Library. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-25091?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-25091 published?: CVE-2021-25091 was published on 2022-02-01 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/96204946-0b10-4a2c-8079-473883ff95b6

Affected products (1)

cpe:2.3:a:ylefebvre:link_library:*:*:*:*:*:wordpress:*:*

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