{"cve":"CVE-2020-15270","nvd":{"published":"2020-10-22T22:15:12.063","modified":"2026-06-17T02:56:23.870","status":"Modified","description":"Parse Server (npm package parse-server) broadcasts events to all clients without checking if the session token is valid. This allows clients with expired sessions to still receive subscription objects. It is not possible to create subscription objects with invalid session tokens. The issue is not patched.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":4.3},"cwes":["CWE-672"],"references":["https://github.com/parse-community/parse-server/commit/78b59fb26b1c36e3cdbd42ba9fec025003267f58","https://github.com/parse-community/parse-server/security/advisories/GHSA-2xm2-xj2q-qgpj","https://npmjs.com/parse-server","https://github.com/parse-community/parse-server/commit/78b59fb26b1c36e3cdbd42ba9fec025003267f58","https://github.com/parse-community/parse-server/security/advisories/GHSA-2xm2-xj2q-qgpj"],"products":["parseplatform:parse-server"],"source":"nvd","synced_at":"2026-10-19T21:09:53.489947993+00:00"},"epss":{"cve":"CVE-2020-15270","score":0.01165,"percentile":0.67305,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-2xm2-xj2q-qgpj","url":"https://osv.dev/vulnerability/GHSA-2xm2-xj2q-qgpj","summary":"receiving subscription objects with deleted session","modified":"2026-07-08T06:28:52.676147326Z","packages":[{"ecosystem":"npm","name":"parse-server","purl":"pkg:npm/parse-server","ranges":["<4.4.0"],"fixed":["4.4.0"]}]}],"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."]}