Critical severity · published Mar 7, 2018
CVE-2018-7753
An issue was discovered in Bleach 2.1.x before 2.1.3
9.8
CVSS
2.2%
EPSS
No
On KEV
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 vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.2% · higher than 82% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BL
Bleach · Mozilla
2.1; 2.1.1; 2.1.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-7753
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-7753
Third Party Advisory
https://bugs.debian.org/892252
Patch
https://github.com/mozilla/bleach/commit/c5df5789ec3471a31311f42c2d19fc2cf21b35ef
Third Party Advisory
https://github.com/mozilla/bleach/releases/tag/v2.1.3
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