{"cve":"CVE-2019-12156","nvd":{"published":"2019-10-02T19:15:11.827","modified":"2026-06-17T02:14:09.707","status":"Modified","description":"Server metadata could be exposed because one of the error messages reflected the whole response back to the client in JetBrains TeamCity versions before 2018.2.5 and UpSource versions before 2018.2 build 1293.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-209"],"references":["https://blog.jetbrains.com/blog/2019/09/26/jetbrains-security-bulletin-q2-2019/","https://blog.jetbrains.com/blog/2019/09/26/jetbrains-security-bulletin-q2-2019/"],"products":["jetbrains:upsource"],"source":"nvd","synced_at":"2026-10-19T20:59:10.855360465+00:00"},"epss":{"cve":"CVE-2019-12156","score":0.00904,"percentile":0.59796,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}