{"id":"CVE-2018-7753","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-7753","generatedAt":"2026-10-28T20:11:30.234Z","title":"Using character entities, it was possible to construct a URI value with a scheme that was not allowed that would slide through unsanitized.","description":"An issue was discovered in Bleach 2.1.x before 2.1.3. Attributes that have URI values weren't properly sanitized if the values contained character entities. Using character entities, it was possible to construct a URI value with a scheme that was not allowed that would slide through unsanitized.","published":"2018-03-07T23:29:00.000Z","lastModified":"2026-06-17T02:03:39.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-20"],"affected":["mozilla/bleach"],"epss":{"score":0.02172,"percentile":0.82202,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (2.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://bugs.debian.org/892252","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/mozilla/bleach/commit/c5df5789ec3471a31311f42c2d19fc2cf21b35ef","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/mozilla/bleach/releases/tag/v2.1.3","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://bugs.debian.org/892252","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/mozilla/bleach/commit/c5df5789ec3471a31311f42c2d19fc2cf21b35ef","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/mozilla/bleach/releases/tag/v2.1.3","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-7753","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}