Security readout for executives and security teams
CVE-2021-33513 is a cross-site scripting issue in Plone through 5.2.4 involving Products.CMFDiffTool inline_diff methods. A vulnerable site could render untrusted content as script in a user's browser. The provided sources do not include CVSS, affected CPEs, or detailed prerequisites. Exposure is most likely limited to Plone deployments through 5.2.4 that include or use Products.CMFDiffTool. Public internet exposure increases concern, but the sources do not define whether anonymous access is required or sufficient. Treat this as a moderate priority for any internet-facing or administrator-used Plone site. Remediate promptly, but do not escalate as confirmed exploited based on the supplied evidence. Mitigation focus: Apply the Plone 20210518 security hotfix referenced by the vendor advisory.; Inventory Plone deployments and identify versions through 5.2.4.; Review Plone guidance for any later fixed release or upgrade path..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2021-33513 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://plone.org/security/hotfix/20210518/xss-vulnerability-in-cmfdifftoolCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.