Improper Sanitization of URI Values in Bleach 2.1.x

CVE-2018-7753 · HIGH Severity

AV:N/AC:L/AU:N/C:P/I:P/A:P

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.

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