CVE-2021-42576
CVSS v3
9.8
CRITICAL
EPSS Score
1.6 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
The bluemonday sanitizer before 1.0.16 for Go, and before 0.0.8 for Python (in pybluemonday), does not properly enforce policies associated with the SELECT, STYLE, and OPTION elements.
Technical details
- Published
- 2021-10-18
Frequently asked questions
What is CVE-2021-42576?
The bluemonday sanitizer before 1.0.16 for Go, and before 0.0.8 for Python (in pybluemonday), does not properly enforce policies associated with the SELECT, STYLE, and OPTION elements.
Is CVE-2021-42576 actively exploited?
Active exploitation of CVE-2021-42576 has not been confirmed. Its EPSS score was 1.6% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-42576?
CVE-2021-42576 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2021-42576 affecting your environment?
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