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 Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade python-bleach | Jul 30, 2024 | Mar 7, 2018 |
| Ubuntu | — | Upgrade python-bleach (Ubuntu Pro)Upgrade python3-bleach (Ubuntu Pro)Upgrade python-bleach-doc (Ubuntu Pro) | Mar 9, 2026 | Mar 5, 2026 |
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