CVE-2021-42326 Information disclosure in n/a

What is CVE-2021-42326?

CVE-2021-42326 is a medium-severity vulnerability in Debian Debian Linux, published on 12 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Redmine before 4.1.5 and 4.2.x before 4.2.3 may disclose the names of users on activity views due to an insufficient access filter.

Which versions are affected by CVE-2021-42326?

1 open source package ship an affected version, including redmine. It affects 2 products.

Products include Debian Debian Linux, Redmine Redmine.

How do I fix CVE-2021-42326?

Upgrade redmine to a fixed version for your release line: 4.1.5 or 4.2.3.

Is CVE-2021-42326 being exploited?

There is no known exploitation of CVE-2021-42326 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 BIT-redmine-2021-42326, DEBIAN-CVE-2021-42326, DLA-2787-1, GHSA-6rmc-qmcc-wm8g, UBUNTU-CVE-2021-42326.