{"schema_version":1,"title":"Koajs vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 4 vulnerabilities in Koajs: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-27959, was published on 26 February 2026. 1 technology has a page of its own.","url":"https://junglewise.ai/threats/vendors/koajs","json_url":"https://junglewise.ai/threats/vendors/koajs.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/vendors/koajs","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"vendor","counts":{"high":1,"all_time":4,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":0,"last_365_days":1},"latest":[{"cve":"CVE-2026-27959","cvss":7.5,"epss":0.005,"slug":"cve-2026-27959-koa-host-header-injection-in-ctx-hostname-api","title":"Koa Host header injection in ctx.hostname API","severity":"high","exploited":false,"published_at":"2026-02-26T02:16:23.317+00:00","url":"https://junglewise.ai/threats/cve-2026-27959-koa-host-header-injection-in-ctx-hostname-api"},{"cvss":3.1,"slug":"koa-open-redirect-via-referrer-header-0a2cc61b","title":"Koa open redirect via Referrer header","severity":"low","exploited":false,"published_at":"2025-07-25T06:30:30+00:00","url":"https://junglewise.ai/threats/koa-open-redirect-via-referrer-header-0a2cc61b"},{"cve":"CVE-2025-32379","cvss":3.1,"epss":0.0026,"slug":"cve-2025-32379-koajs-cross-site-scripting-in-ctx-redirect","title":"Koajs Cross-Site Scripting in ctx.redirect()","severity":"low","exploited":false,"published_at":"2025-04-09T13:00:07+00:00","url":"https://junglewise.ai/threats/cve-2025-32379-koajs-cross-site-scripting-in-ctx-redirect"},{"cve":"CVE-2025-25200","cvss":4,"epss":0.0084,"slug":"cve-2025-25200-koa-inefficient-regular-expression-in-header-parsing","title":"Koa inefficient regular expression in header parsing","severity":"medium","exploited":false,"published_at":"2025-02-12T19:23:09+00:00","url":"https://junglewise.ai/threats/cve-2025-25200-koa-inefficient-regular-expression-in-header-parsing"}],"vendor":{"hub":true,"name":"Koajs","slug":"koajs","homepage":"https://koajs.com/","description":"Koa is an open-source project maintaining a web framework for the Node.js runtime environment.","url":"https://junglewise.ai/threats/vendors/koajs"},"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"most_severe":[{"cve":"CVE-2026-27959","cvss":7.5,"epss":0.005,"slug":"cve-2026-27959-koa-host-header-injection-in-ctx-hostname-api","title":"Koa Host header injection in ctx.hostname API","severity":"high","exploited":false,"published_at":"2026-02-26T02:16:23.317+00:00","url":"https://junglewise.ai/threats/cve-2026-27959-koa-host-header-injection-in-ctx-hostname-api"},{"cve":"CVE-2025-25200","cvss":4,"epss":0.0084,"slug":"cve-2025-25200-koa-inefficient-regular-expression-in-header-parsing","title":"Koa inefficient regular expression in header parsing","severity":"medium","exploited":false,"published_at":"2025-02-12T19:23:09+00:00","url":"https://junglewise.ai/threats/cve-2025-25200-koa-inefficient-regular-expression-in-header-parsing"},{"cve":"CVE-2025-32379","cvss":3.1,"epss":0.0026,"slug":"cve-2025-32379-koajs-cross-site-scripting-in-ctx-redirect","title":"Koajs Cross-Site Scripting in ctx.redirect()","severity":"low","exploited":false,"published_at":"2025-04-09T13:00:07+00:00","url":"https://junglewise.ai/threats/cve-2025-32379-koajs-cross-site-scripting-in-ctx-redirect"},{"cvss":3.1,"slug":"koa-open-redirect-via-referrer-header-0a2cc61b","title":"Koa open redirect via Referrer header","severity":"low","exploited":false,"published_at":"2025-07-25T06:30:30+00:00","url":"https://junglewise.ai/threats/koa-open-redirect-via-referrer-header-0a2cc61b"}],"generated_at":"2026-09-26T09:11:00.170868+00:00","technologies":[{"name":"Koajs Koa","slug":"koa","vulnerabilities":6,"url":"https://junglewise.ai/threats/technologies/koa"}]}