Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Jenkins Mattermost Notification Plugin versions before 2.7.1 stored webhook URLs containing a secret token unencrypted in the global configuration and job config.xml files on the Jenkins master. An attacker with Extended Read permission or access to the master file system could view the token. Upgrade to version 2.7.1 or later.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.5 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS 0.0093, the 61st percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:10 UTC First seen by agentprime
- 31 Oct 2026, 15:10 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-xcj6-4355-2823
- OSV: GHSA-xcj6-4355-2823
- nvd.nist.gov/vuln/detail/CVE-2019-10459
- github.com/jenkinsci/mattermost-plugin/commit/c6e509307812d93ba295a35dea95016f007de158
- github.com/jenkinsci/mattermost-plugin
- jenkins.io/security/advisory/2019-10-23/#SECURITY-1628
- www.openwall.com/lists/oss-security/2019/10/23/2