server/handler/HistogramQueryHandler.scala in Twitter TwitterServer (aka twitter-server) before 20.12.0, in some configurations, allows XSS via the /histograms endpoint.
https://github.com/twitter/twitter-server/compare/twitter-server-20.10.0...twitter-server-20.12.0
https://github.com/twitter/twitter-server/commit/e0aeb87e89a6e6c711214ee2de0dd9f6e5f9cb6c
https://advisory.checkmarx.net/advisory/CX-2020-4287
Source: Mitre, NVD
Published: 2020-12-29
Updated: 2026-06-17
Base Score: 3.5
Vector: CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:N
Severity: Low
Base Score: 5.4
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Severity: Medium
EPSS: 0.87622