CVE-2020-2103

5.4 mediumEPSS 7.0%

Jenkins 2.218 and earlier, LTS 2.204.1 and earlier exposed session identifiers on a user's detail object in the whoAmI diagnostic page.

Severity

5.4 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS: 7.0% chance of exploitation in the next 30 days; higher than 94% of CVEs (scores of 2026-10-31)
CWE: CWE-200
Published: 2020-01-29
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Advisory	Ecosystem	Package	Affected	Fixed in
GHSA-4jjj-cm7q-v6hr	Maven	org.jenkins-ci.main:jenkins-core	>=2.205 <2.219	2.219
GHSA-4jjj-cm7q-v6hr	Maven	org.jenkins-ci.main:jenkins-core	<2.204.2	2.204.2