Security readout for executives and security teams
CVE-2021-33508 is a stored cross-site scripting issue in Plone through 5.2.4. A crafted user full name can be mishandled when the ownership tab of a content item is rendered, potentially running attacker-controlled script in another user's browser. Exposure is most likely for Plone sites through 5.2.4 where users can control their full name and privileged users view ownership information. The supplied data does not identify other affected products or deployment-specific requirements. Treat this as a timely CMS hardening item, especially for externally managed Plone sites. It is not supported by supplied evidence as actively exploited, but stored XSS in administration-facing workflows can create account and content-management risk. Mitigation focus: Review and apply Plone security hotfix 20210518 guidance.; Check Plone vendor guidance for fixed upgrade paths.; Limit account profile changes by untrusted users until remediated..
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-2021-33508 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/stored-xss-from-user-fullnameCVE 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.