Moderate severityNVD Advisory· Published May 20, 2021· Updated Aug 3, 2024
CVE-2021-3313
CVE-2021-3313
Description
Plone CMS until version 5.2.4 has a stored Cross-Site Scripting (XSS) vulnerability in the user fullname property and the file upload functionality. The user's input data is not properly encoded when being echoed back to the user. This data can be interpreted as executable code by the browser and allows an attacker to execute JavaScript in the context of the victim's browser if the victim opens a vulnerable page containing an XSS payload.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
PlonePyPI | < 5.2.4 | 5.2.4 |
Affected products
2- Plone CMS/Plone CMSdescription
Patches
Vulnerability mechanics
References
9- github.com/advisories/GHSA-hprr-4vfq-fcxwghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-3313ghsaADVISORY
- www.openwall.com/lists/oss-security/2021/05/22/1ghsamailing-listx_refsource_MLISTWEB
- github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2021-78.yamlghsaWEB
- plone.org/download/releases/5.2.3ghsax_refsource_MISCWEB
- plone.org/security/hotfix/20210518ghsax_refsource_MISCWEB
- plone.org/security/hotfix/20210518/stored-xss-from-file-upload-svg-htmlghsaWEB
- plone.org/security/hotfix/20210518/stored-xss-from-user-fullnameghsaWEB
- www.compass-security.com/fileadmin/Research/Advisories/2021-07_CSNC-2021-013_XSS_in_Plone_CMS.txtghsax_refsource_MISCWEB
News mentions
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