CVE-2023-29171 WordPress Magic Post Thumbnail Plugin <= 4.1.10 is vulnerable to Cross Site Scripting (XSS)

Q: What is CVE-2023-29171?

CVE-2023-29171 is a high-severity cross-site scripting vulnerability in Magic Post Thumbnail, published on 7 Apr 2023. 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-2023-29171 being exploited?

There is no known exploitation of CVE-2023-29171 in the wild and no public exploit code.

Q: How do I fix CVE-2023-29171?

No fix has been published for CVE-2023-29171 yet. Limit exposure of the affected software until one is available.

High 7.1 Published 7 Apr 2023 Updated 28 Apr 2026

Unauthenticated attackers can execute arbitrary scripts in the context of other users via reflected XSS in the Magic Post Thumbnail plugin.

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-2023-29171?

CVE-2023-29171 is a high-severity cross-site scripting vulnerability in Magic Post Thumbnail, published on 7 Apr 2023. 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

Unauth. Reflected Cross-site Scripting (XSS) vulnerability in Magic Post Thumbnail plugin <= 4.1.10 versions.

Weakness: CWE-79

Which versions are affected by CVE-2023-29171?

It affects 1 product.

Products include Magic-Post-Thumbnail Magic Post Thumbnail.

How do I fix CVE-2023-29171?

No fix has been published for CVE-2023-29171 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-2023-29171 being exploited?

There is no known exploitation of CVE-2023-29171 in the wild and no public exploit code.

Sources

Also known as GHSA-w5w3-73cq-jm68.