CVE-2023-0835 markdown-pdf 11.0.0 - Local File Read via Server Side XSS
An attacker can exploit Server-Side XSS in markdown-pdf to read arbitrary local files from the server.
- 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-2023-0835?
CVE-2023-0835 is a high-severity cross-site scripting vulnerability in markdown-pdf, published on 4 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
markdown-pdf version 11.0.0 allows an external attacker to remotely obtain arbitrary local files. This is possible because the application does not validate the Markdown content entered by the user.
Weakness: CWE-79
Which versions are affected by CVE-2023-0835?
2 open source packages ship an affected version, including markdown-pdf. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
markdown-pdf npm | All versions to 11.0.0 | None |
markdown-pdf npm | All versions to 11.0.0 | None |
Products include Markdown-Pdf Project Markdown-Pdf.
How do I fix CVE-2023-0835?
No fix has been published for CVE-2023-0835 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-2023-0835 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-0835 exists.
Other vulnerabilities in markdown-pdf
Sources
Also known as GHSA-qghr-877h-f9jh.