{"action":"Upgrade morgan to 1.12.0 or later.","affected":[{"fixed":"1.12.0","introduced":"0"}],"component":"morgan","cve_ids":["CVE-2026-15603"],"ecosystem":"npm","epss":0.00397,"exploited":false,"fixed_versions":["1.12.0"],"ghsa_id":"GHSA-jxfw-x594-9x9m","id":"tcs_01M5KFZ6A8TEN1V6ES9YCP6DET","modified_at":"2026-09-08T21:45:04.626840405Z","published_at":"2026-09-08T21:28:26Z","references":["https://osv.dev/vulnerability/GHSA-jxfw-x594-9x9m","https://github.com/expressjs/morgan/security/advisories/GHSA-jxfw-x594-9x9m","https://nvd.nist.gov/vuln/detail/CVE-2026-15603","https://github.com/expressjs/morgan/commit/fbf93833186920cc39bb19b247e4a86b61bef4fe","https://cna.openjsf.org/security-advisories.html","https://github.com/expressjs/morgan","https://github.com/expressjs/morgan/releases/tag/1.12.0"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GHSA-jxfw-x594-9x9m","url":"https://osv.dev/vulnerability/GHSA-jxfw-x594-9x9m"}],"summary":"morgan vulnerable to Log Forging via unescaped Unicode line separators"}