CVE-2021-38351 OSD Subscribe <= 1.2.3 Reflected Cross-Site Scripting
Attackers can inject arbitrary web scripts via the osd_subscribe_message parameter in the OSD Subscribe WordPress 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-2021-38351?
CVE-2021-38351 is a medium-severity cross-site scripting vulnerability in OSD Subscribe, published on 10 Sep 2021. 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 OSD Subscribe WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the osd_subscribe_message parameter found in the ~/options/osd_subscribe_options_subscribers.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 1.2.3.
Weakness: CWE-79
Which versions are affected by CVE-2021-38351?
It affects 1 product.
Products include Outsidesource Osd Subscribe.
How do I fix CVE-2021-38351?
No fix has been published for CVE-2021-38351 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-2021-38351 being exploited?
There is no known exploitation of CVE-2021-38351 in the wild and no public exploit code.
Sources
Also known as GHSA-mwwm-v9vx-c276.