CVE-2021-25091 Link Library < 7.2.9 - Reflected Cross-Site Scripting

Q: What is CVE-2021-25091?

CVE-2021-25091 is a medium-severity cross-site scripting vulnerability in Unknown Link Library, published on 1 Feb 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Q: Is CVE-2021-25091 being exploited?

There is no known exploitation of CVE-2021-25091 in the wild and no public exploit code.

Q: How do I fix CVE-2021-25091?

No fix has been published for CVE-2021-25091 yet. Limit exposure of the affected software until one is available.

Medium 6.1 Published 1 Feb 2022 Updated 3 Aug 2024

Reflected XSS in Link Library plugin allows attackers to execute scripts in admin pages via unsanitized input.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-25091?

CVE-2021-25091 is a medium-severity cross-site scripting vulnerability in Unknown Link Library, published on 1 Feb 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official 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

Weakness: CWE-79

Which versions are affected by CVE-2021-25091?

It affects 1 product.

Products include Ylefebvre Link Library.

How do I fix CVE-2021-25091?

No fix has been published for CVE-2021-25091 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-25091 being exploited?

There is no known exploitation of CVE-2021-25091 in the wild and no public exploit code.

Sources

Also known as GHSA-76j9-mfwr-cgfp.