{"cve":"CVE-2018-7753","nvd":{"published":"2018-03-07T23:29:00.273","modified":"2026-06-17T02:03:39.290","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-20"],"references":["https://bugs.debian.org/892252","https://github.com/mozilla/bleach/commit/c5df5789ec3471a31311f42c2d19fc2cf21b35ef","https://github.com/mozilla/bleach/releases/tag/v2.1.3","https://bugs.debian.org/892252","https://github.com/mozilla/bleach/commit/c5df5789ec3471a31311f42c2d19fc2cf21b35ef"],"products":["mozilla:bleach"],"source":"nvd","synced_at":"2026-10-19T20:48:50.842038930+00:00"},"epss":{"cve":"CVE-2018-7753","score":0.02172,"percentile":0.82297,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-m9mq-p2f9-cfqv","url":"https://osv.dev/vulnerability/GHSA-m9mq-p2f9-cfqv","summary":"Bleach URI Scheme Restriction Bypass","modified":"2025-02-16T05:29:49.530342Z","packages":[{"ecosystem":"PyPI","name":"bleach","purl":"pkg:pypi/bleach","ranges":[">=2.1.0 <2.1.3"],"fixed":["2.1.3"]}]},{"id":"PYSEC-2018-51","url":"https://osv.dev/vulnerability/PYSEC-2018-51","summary":"","modified":"2023-11-08T04:00:23.566004Z","packages":[{"ecosystem":"PyPI","name":"bleach","purl":"pkg:pypi/bleach","ranges":[">=2.1 <2.1.3"],"fixed":["2.1.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}