CVE-2021-32858 esdoc-publish-html-plugin vulnerable to Cross-site Scripting

Medium 6.1 Published Updated

Attackers can bypass the HTML sanitizer in the ESDoc publishing plugin to execute arbitrary scripts in users' browsers.

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-2021-32858?

CVE-2021-32858 is a medium-severity cross-site scripting vulnerability in esdoc-publish-html-plugin, published on 20 Feb 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

esdoc-publish-html-plugin is a plugin for the document maintenance software ESDoc. TheHTML sanitizer in esdoc-publish-html-plugin 1.1.2 and prior can be bypassed which may lead to cross-site scripting (XSS) issues. There are no known patches for this issue.

Weakness: CWE-79

Which versions are affected by CVE-2021-32858?

It affects 1 product.

Products include Esdoc Esdoc-Publish-Html-Plugin.

How do I fix CVE-2021-32858?

No fix has been published for CVE-2021-32858 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-2021-32858 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-32858 exists.

Sources

Also known as GHSA-28vr-33jf-c3cc.

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