CVE-2021-27517 Cross-site scripting in n/a
An attacker can execute arbitrary JavaScript in the browser by tricking a victim into uploading a malicious PDF containing embedded scripts.
- 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-2021-27517?
CVE-2021-27517 is a medium-severity cross-site scripting vulnerability in n/a, published on 20 Jul 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
Foxit PDF SDK For Web through 7.5.0 allows XSS. There is arbitrary JavaScript code execution in the browser if a victim uploads a malicious PDF document containing embedded JavaScript code that abuses app.alert (in the Acrobat JavaScript API).
Weakness: CWE-79
Which versions are affected by CVE-2021-27517?
It affects 2 products.
Products include Foxit Phantompdf, Foxit Reader.
How do I fix CVE-2021-27517?
No fix has been published for CVE-2021-27517 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-2021-27517 being exploited?
There is no known exploitation of CVE-2021-27517 in the wild and no public exploit code.
Sources
Also known as GHSA-gh4f-wqp7-vmm2.