CVE-2021-42575

Name: CVE-2021-42575
Creator: NVD / NIST
Published: 2021-10-18T15:15:07.78+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.84%

Last modified Jun 17, 2026

CVE-2021-42575 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The OWASP Java HTML Sanitizer before 20211018.1 does not properly enforce policies associated with the SELECT, STYLE, and OPTION elements.. EPSS estimates a 2.84% chance of exploitation in the next 30 days.

Description

The OWASP Java HTML Sanitizer before 20211018.1 does not properly enforce policies associated with the SELECT, STYLE, and OPTION elements.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.84%

84.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Owasp	Java Html Sanitizer	< 20211018.2
Oracle	Middleware Common Libraries And Tools	12.2.1.3.0
Oracle	Middleware Common Libraries And Tools	12.2.1.4.0
Oracle	Primavera Unifier	>= 17.7, <= 17.12
Oracle	Primavera Unifier	18.8
Oracle	Primavera Unifier	19.12
Oracle	Primavera Unifier	20.12
Oracle	Primavera Unifier	21.12

References

https://docs.google.com/document/d/11SoX296sMS0XoQiQbpxc5pNxSdbJKDJkm5BDv0zrX50/Exploit, Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory
https://docs.google.com/document/d/11SoX296sMS0XoQiQbpxc5pNxSdbJKDJkm5BDv0zrX50/Exploit, Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory

Timeline

Published: Oct 18, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-42575?

The OWASP Java HTML Sanitizer before 20211018.1 does not properly enforce policies associated with the SELECT, STYLE, and OPTION elements.

How severe is CVE-2021-42575?

CVE-2021-42575 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.84% probability of exploitation in the next 30 days.

How do I fix CVE-2021-42575?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-42575?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST