Bleach URI Scheme Restriction Bypass
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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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2018-7753US | critical9.8 | — | ||
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 entitie… | ||||
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references
External citations — patches, advisories, analysis.
- https://bugs.debian.org/892252WEB
- https://github.com/mozilla/bleachPACKAGE
- https://github.com/mozilla/bleach/commit/c5df5789ec3471a31311f42c2d19fc2cf21b35efWEB
- https://github.com/mozilla/bleach/releases/tag/v2.1.3WEB
- https://github.com/pypa/advisory-database/tree/main/vulns/bleach/PYSEC-2018-51.yamlWEB
- https://nvd.nist.gov/vuln/detail/CVE-2018-7753ADVISORY
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