{"id":"CVE-2016-9487","aliases":["EUVD-2016-10293","GHSA-vvh2-g87v-gg7j","UBUNTU-CVE-2016-9487"],"status":"published","title":"EpubCheck 4.0.1 is vulnerable to external XML entity processing attacks","description":"EpubCheck 4.0.1 does not properly restrict resolving external entities when parsing XML in EPUB files during validation. An attacker who supplies a specially crafted EPUB file may be able to exploit this behavior to read arbitrary files, or have the victim execute arbitrary requests on his behalf, abusing the victim's trust relationship with other entities.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01262,"percentile":0.69851,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-611"],"published":"2018-07-13T20:00:00Z","modified":"2026-10-24T10:30:55Z","affected":[{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"epubcheck","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.0~alpha11-2","4.0.0-2","4.0.1-1","4.0.1-2"]}],"products":[{"vendor":"epubcheck","product":"epubcheck"},{"vendor":"w3","product":"epubcheck"}],"references":[{"url":"https://www.kb.cert.org/vuls/id/779243","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","Third Party Advisory","US Government Resource","advisory"]},{"url":"https://www.securityfocus.com/bid/94864/","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-9487"},{"url":"https://github.com/advisories/GHSA-vvh2-g87v-gg7j"},{"url":"https://ubuntu.com/security/CVE-2016-9487","tags":["report"]},{"url":"https://github.com/IDPF/epubcheck/releases/tag/v4.0.2","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-9487","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2016-9487","title":"EpubCheck 4.0.1 is vulnerable to external XML entity processing attacks","description":"EpubCheck 4.0.1 does not properly restrict resolving external entities when parsing XML in EPUB files during validation. An attacker who supplies a specially crafted EPUB file may be able to exploit this behavior to read arbitrary files, or have the victim execute arbitrary requests on his behalf, abusing the victim's trust relationship with other entities.","status":"published","published":"2018-07-13T20:00:00Z","modified":"2024-08-06T02:50:38.36Z","cwes":["CWE-611"],"updated_at":"2026-11-02T14:33:32.103757Z"}],"euvd":[{"id":"EUVD-2016-10293","description":"EpubCheck 4.0.1 does not properly restrict resolving external entities when parsing XML in EPUB files during validation. An attacker who supplies a specially crafted EPUB file may be able to exploit this behavior to read arbitrary files, or have the victim execute arbitrary requests on his behalf, abusing the victim's trust relationship with other entities.","status":"published","published":"2018-07-13T20:00:00Z","modified":"2024-08-06T02:50:38Z","updated_at":"2026-11-03T02:22:27.235814Z"}],"ghsa":[{"id":"GHSA-vvh2-g87v-gg7j","title":"EpubCheck 4.0.1 does not properly restrict resolving external entities when parsing XML in EPUB...","description":"EpubCheck 4.0.1 does not properly restrict resolving external entities when parsing XML in EPUB files during validation. An attacker who supplies a specially crafted EPUB file may be able to exploit this behavior to read arbitrary files, or have the victim execute arbitrary requests on his behalf, abusing the victim's trust relationship with other entities.","status":"published","published":"2022-05-13T01:38:30Z","modified":"2023-02-01T05:09:14Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:50:56.168791Z"}],"nvd":[{"id":"CVE-2016-9487","description":"EpubCheck 4.0.1 does not properly restrict resolving external entities when parsing XML in EPUB files during validation. An attacker who supplies a specially crafted EPUB file may be able to exploit this behavior to read arbitrary files, or have the victim execute arbitrary requests on his behalf, abusing the victim's trust relationship with other entities.","status":"published","published":"2018-07-13T20:29:01.52Z","modified":"2026-06-17T00:56:09.423Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:03:39.621168Z"}],"osv":[{"id":"CVE-2016-9487","description":"EpubCheck 4.0.1 does not properly restrict resolving external entities when parsing XML in EPUB files during validation. An attacker who supplies a specially crafted EPUB file may be able to exploit this behavior to read arbitrary files, or have the victim execute arbitrary requests on his behalf, abusing the victim's trust relationship with other entities.","status":"published","published":"2018-07-13T20:29:01.52Z","modified":"2026-10-24T10:30:55.622618994Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:03.472693Z"},{"id":"UBUNTU-CVE-2016-9487","description":"EpubCheck 4.0.1 does not properly restrict resolving external entities when parsing XML in EPUB files during validation. An attacker who supplies a specially crafted EPUB file may be able to exploit this behavior to read arbitrary files, or have the victim execute arbitrary requests on his behalf, abusing the victim's trust relationship with other entities.","status":"published","published":"2018-07-13T20:29:00Z","modified":"2025-10-24T04:45:57Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:13.356796Z"}]}}