CVE-2023-32325 Cross-site scripting in PostHog-js

Medium 5.4 Published Updated

Cross-site scripting vulnerability in PostHog-js allows attackers to inject malicious scripts, requiring users to upgrade the library.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2023-32325?

CVE-2023-32325 is a medium-severity cross-site scripting vulnerability in posthog-js, published on 26 May 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

PostHog-js is a library to interface with the PostHog analytics tool. Versions prior to 1.57.2 have the potential for cross-site scripting. Problem has been patched in 1.57.2. Users are advised to upgrade. Users unable to upgrade should ensure that their Content Security Policy is in place.

Weakness: CWE-79

Which versions are affected by CVE-2023-32325?

2 open source packages ship an affected version, including posthog-js. It affects 1 product.

PackageAffectedFixed in
posthog-js npmAll versions1.57.2
posthog-js npmAll versions1.57.2

Products include Posthog Posthog-Js.

How do I fix CVE-2023-32325?

Upgrade posthog-js to 1.57.2 or later.

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-2023-32325 being exploited?

There is no known exploitation of CVE-2023-32325 in the wild and no public exploit code.

Sources

Also known as GHSA-8775-5hwv-wr6v.

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