CVE-2018-8741 Path traversal in n/a

What is CVE-2018-8741?

CVE-2018-8741 is a high-severity path traversal vulnerability in Debian Debian Linux, published on 17 Mar 2018. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A directory traversal flaw in SquirrelMail 1.4.22 allows an authenticated attacker to exfiltrate (or potentially delete) files from the hosting server, related to ../ in the att_local_name field in Deliver.class.php.

Weakness: CWE-22

Which versions are affected by CVE-2018-8741?

It affects 2 products.

Products include Debian Debian Linux, Squirrelmail Squirrelmail.

How do I fix CVE-2018-8741?

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-2018-8741 being exploited?

There is no known exploitation of CVE-2018-8741 in the wild and no public exploit code.

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 DLA-1344-1, DSA-4168-1, GHSA-vqm2-8vc9-6hh2, MGASA-2018-0188, UBUNTU-CVE-2018-8741.