Medium severity · published Mar 27, 2021
CVE-2021-29272
bluemonday before 1.0.5 allows XSS because certain Go lowercasing converts an uppercase Cyrillic character, defeating a protection mechanism against the "script" string
6.1
CVSS
0.9%
EPSS
No
On KEV
Description
bluemonday before 1.0.5 allows XSS because certain Go lowercasing converts an uppercase Cyrillic character, defeating a protection mechanism against the "script" string.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 60% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BL
Bluemonday · Microco
before 1.0.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-29272
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-29272
Third Party Advisory
https://github.com/microcosm-cc/bluemonday/releases/tag/v1.0.5
Third Party Advisory
https://vuln.ryotak.me/advisories/4
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