CVE-2021-33513: XSS
First published: Fri May 21 2021(Updated: )
Plone through 5.2.4 allows XSS via the inline_diff methods in Products.CMFDiffTool.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Plone Plone | <=5.2.4 | |
| pip/Plone | <=5.2.4 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2021/05/22/1
- https://plone.org/security/hotfix/20210518/xss-vulnerability-in-cmfdifftool
- https://nvd.nist.gov/vuln/detail/CVE-2021-33513
- https://github.com/advisories/GHSA-fj67-w3m4-rfmp (Advisory)
- https://github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2021-85.yaml
Frequently Asked Questions
What is CVE-2021-33513?
CVE-2021-33513 is a vulnerability in Plone through version 5.2.4 that allows XSS (Cross-Site Scripting) attacks via the inline_diff methods in Products.CMFDiffTool.
How severe is CVE-2021-33513?
CVE-2021-33513 has a severity rating of medium with a CVSS score of 5.4.
How can I exploit CVE-2021-33513?
To exploit CVE-2021-33513, an attacker can use Cross-Site Scripting techniques to inject malicious scripts into a vulnerable Plone application, which may then be executed by unsuspecting users.
What is the impacted software for CVE-2021-33513?
Plone versions up to and including 5.2.4 are affected by CVE-2021-33513.
How can I mitigate CVE-2021-33513?
To mitigate CVE-2021-33513, it is recommended to update your Plone installation to a version that includes the provided security hotfix or patch. Additionally, make sure to follow best practices for input validation and output encoding to prevent XSS attacks.
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