CVE-2021-33511: SSRF
First published: Fri May 21 2021(Updated: )
Plone though 5.2.4 allows SSRF via the lxml parser. This affects Diazo themes, Dexterity TTW schemas, and modeleditors in plone.app.theming, plone.app.dexterity, and plone.supermodel.
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/server-side-request-forgery-via-lxml-parser
- https://nvd.nist.gov/vuln/detail/CVE-2021-33511
- https://github.com/advisories/GHSA-gc9g-67cq-p7v4 (Advisory)
- https://github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2021-83.yaml
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2021-33511.
What is the severity of CVE-2021-33511?
The severity of CVE-2021-33511 is high with a severity value of 7.5.
What is the affected software?
The affected software is Plone version up to 5.2.4.
How does CVE-2021-33511 impact Plone?
CVE-2021-33511 allows SSRF (Server-Side Request Forgery) via the lxml parser, affecting Diazo themes, Dexterity TTW schemas, and modeleditors in plone.app.theming, plone.app.dexterity, and plone.supermodel.
Are there any references related to CVE-2021-33511?
Yes, you can find more information about CVE-2021-33511 at the following references: [Reference 1](http://www.openwall.com/lists/oss-security/2021/05/22/1) and [Reference 2](https://plone.org/security/hotfix/20210518/server-side-request-forgery-via-lxml-parser).
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