CVE-2021-3313
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.
Does this matter?
Lower severity and a low EPSS score (0.98%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.98% probability · 60th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- plone/plone
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2021/05/22/1Mailing List, Third Party Advisory
- https://plone.org/download/releases/5.2.3Release Notes, Vendor Advisory
- https://plone.org/security/hotfix/20210518Vendor Advisory
- https://www.compass-security.com/fileadmin/Research/Advisories/2021-07_CSNC-2021-013_XSS_in_Plone_CMS.txtExploit, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/22/1Mailing List, Third Party Advisory
- https://plone.org/download/releases/5.2.3Release Notes, Vendor Advisory
- https://plone.org/security/hotfix/20210518Vendor Advisory
- https://www.compass-security.com/fileadmin/Research/Advisories/2021-07_CSNC-2021-013_XSS_in_Plone_CMS.txtExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.