CVE-2020-2103
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.
- 5.4MediumCVSS base score
- 7.0%Exploitation in 30 daysEPSS · top 5.7% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Nuclei template for it.
Show the exploits1
Nuclei templates1 template
- Jenkins <=2.218 - Information Disclosure (Nuclei template) (opens in a new tab)
http/cves/2020/CVE-2020-2103.yamlSeverity medium
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By jenkins
- 55 days later
· 55 days later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 7.0% · top 5.7% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.4.
Affected products
- affected unspecified – ≤ 2.218
- affected unspecified – ≤ LTS 2.204.1
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.jenkins-ci.main:jenkins-coreGHSA-4jjj-cm7q-v6hr (opens in a new tab)
References
6
- https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1695 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20200129 Multiple vulnerabilities in Jenkins and Jenkins plugins (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2020:0681 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2020:0683 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHBA-2020:0402 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHBA-2020:0675 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-2399 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-4jjj-cm7q-v6hr (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-2103)Record last updated .