CVE-2020-21365 Path traversal in n/a

What is CVE-2020-21365?

CVE-2020-21365 is a high-severity path traversal vulnerability in Debian Debian Linux, published on 15 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Directory traversal vulnerability in wkhtmltopdf through 0.12.5 allows remote attackers to read local files and disclose sensitive information via a crafted html file running with the default configurations.

Weakness: CWE-22

Which versions are affected by CVE-2020-21365?

It affects 2 products.

Products include Debian Debian Linux, Wkhtmltopdf Wkhtmltopdf.

How do I fix CVE-2020-21365?

Apply the vendor's patch.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2020-21365 being exploited?

There is no known exploitation of CVE-2020-21365 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2020-21365, DLA-3158-1, GHSA-36cg-hvm7-mhwp, MGASA-2022-0407, UBUNTU-CVE-2020-21365, USN-6232-1.