{"schema_version":1,"title":"Uglifyjs Project UglifyJS vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 3 vulnerabilities in Uglifyjs Project UglifyJS: 0 in the last 7 days and 0 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, UglifyJS improper boolean expression rewriting, was published on 9 October 2018.","url":"https://junglewise.ai/threats/technologies/uglifyjs","json_url":"https://junglewise.ai/threats/technologies/uglifyjs.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/technologies/uglifyjs","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":1,"all_time":3,"critical":1,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":0,"last_365_days":0},"latest":[{"slug":"uglifyjs-improper-boolean-expression-rewriting-34503f03","title":"UglifyJS improper boolean expression rewriting","severity":"info","exploited":false,"published_at":"2018-10-09T00:39:43+00:00","url":"https://junglewise.ai/threats/uglifyjs-improper-boolean-expression-rewriting-34503f03"},{"cve":"CVE-2015-8858","cvss":7.5,"epss":0.0236,"slug":"cve-2015-8858-uglifyjs-redos-in-parse-call","title":"UglifyJS ReDoS in parse call","severity":"high","exploited":false,"published_at":"2017-01-23T21:59:00.61+00:00","url":"https://junglewise.ai/threats/cve-2015-8858-uglifyjs-redos-in-parse-call"},{"cve":"CVE-2015-8857","cvss":9.8,"slug":"cve-2015-8857-uglifyjs-incorrect-boolean-expression-rewriting","title":"UglifyJS incorrect boolean expression rewriting","severity":"critical","exploited":false,"published_at":"2017-01-23T21:59:00.58+00:00","url":"https://junglewise.ai/threats/cve-2015-8857-uglifyjs-incorrect-boolean-expression-rewriting"}],"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}],"related":[],"technology":{"hub":true,"name":"Uglifyjs Project UglifyJS","slug":"uglifyjs","vendor":{"name":"Uglifyjs Project","slug":"uglifyjs-project","url":"https://junglewise.ai/threats/vendors/uglifyjs-project"},"aliases":[],"category":"library","homepage":"http://lisperator.net/uglifyjs/","repo_url":"https://github.com/mishoo/UglifyJS","description":"A JavaScript parser, minifier, compressor, and beautifier toolkit.","url":"https://junglewise.ai/threats/technologies/uglifyjs"},"most_severe":[{"cve":"CVE-2015-8857","cvss":9.8,"slug":"cve-2015-8857-uglifyjs-incorrect-boolean-expression-rewriting","title":"UglifyJS incorrect boolean expression rewriting","severity":"critical","exploited":false,"published_at":"2017-01-23T21:59:00.58+00:00","url":"https://junglewise.ai/threats/cve-2015-8857-uglifyjs-incorrect-boolean-expression-rewriting"},{"cve":"CVE-2015-8858","cvss":7.5,"epss":0.0236,"slug":"cve-2015-8858-uglifyjs-redos-in-parse-call","title":"UglifyJS ReDoS in parse call","severity":"high","exploited":false,"published_at":"2017-01-23T21:59:00.61+00:00","url":"https://junglewise.ai/threats/cve-2015-8858-uglifyjs-redos-in-parse-call"},{"slug":"uglifyjs-improper-boolean-expression-rewriting-34503f03","title":"UglifyJS improper boolean expression rewriting","severity":"info","exploited":false,"published_at":"2018-10-09T00:39:43+00:00","url":"https://junglewise.ai/threats/uglifyjs-improper-boolean-expression-rewriting-34503f03"}],"generated_at":"2026-09-26T09:11:00.170868+00:00"}