{"cve":"CVE-2017-0897","nvd":{"published":"2017-06-22T21:29:00.183","modified":"2026-06-17T00:58:29.040","status":"Modified","description":"ExpressionEngine version 2.x < 2.11.8 and version 3.x < 3.5.5 create an object signing token with weak entropy. Successfully guessing the token can lead to remote code execution.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-331","CWE-330"],"references":["http://www.securityfocus.com/bid/99242","https://docs.expressionengine.com/latest/about/changelog.html#version-3-5-5","https://docs.expressionengine.com/v2/about/changelog.html#version-2-11-8","https://expressionengine.com/blog/expressionengine-3.5.5-and-2.11.8-released","https://hackerone.com/reports/215890"],"products":["expressionengine:expressionengine"],"source":"nvd","synced_at":"2026-10-19T20:43:44.556243339+00:00"},"epss":{"cve":"CVE-2017-0897","score":0.04042,"percentile":0.90622,"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."]}