CVE-2025-53667: 
Java vulnerability analysis and mitigation

Jenkins Dead Man's Snitch Plugin 0.1 contains a security vulnerability (CVE-2025-53667) where Dead Man's Snitch tokens are displayed without masking on the job configuration form. This vulnerability was discovered and reported by Romuald Moisan from Aix Marseille University and was publicly disclosed on July 9, 2025 (Jenkins Advisory, NVD).

The vulnerability is rated as Medium severity with a CVSS v3.1 Base Score of 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N). The issue stems from the plugin's failure to mask (hide with asterisks) Dead Man's Snitch tokens when they are displayed in the job configuration form. This is classified as CWE-522 (Insufficiently Protected Credentials) (NVD).

The vulnerability increases the potential for attackers to observe and capture Dead Man's Snitch tokens from the job configuration form. These tokens could be viewed and potentially captured by anyone with access to the Jenkins job configuration interface (Jenkins Advisory).

The vulnerability can be exploited by attackers who have access to view the Jenkins job configuration form. No special privileges or complex attack vectors are required beyond this access (Jenkins Advisory).

As of the advisory's publication date (July 9, 2025), there is no fix available for this vulnerability in the Dead Man's Snitch Plugin. Users should monitor for updates and implement them when available. In the meantime, access to job configuration pages should be strictly limited (Jenkins Advisory).