GHSA-hm2p-fhwx-9285 · Severity: critical · Ecosystem: pip — Incorrect Permission Assignment for Critical Resource in Plone
Plone through 5.2.4 allows remote authenticated managers to perform disk I/O via crafted keyword arguments to the ReStructuredText transform in a Python script.
Conclusion & alert: CVE-2021-33509 is rated High Risk (68.3/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.04%). Core evidence: EPSS rose +1.19% over the last day, indicating growing attacker interest. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.85% | 2.04% | +1.19% |
| 2 | 2026-05-23 | 0.98% | 0.85% | -0.13% |
| 3 | 2025-06-01 | — | 0.98% | — |
Full EPSS history (14 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.9 | 3.1 | CRITICAL |
|
3.1 | 6.0 | [email protected] |
| 8.5 | 2.0 | HIGH |
|
6.8 | 10.0 | [email protected] |
GHSA-hm2p-fhwx-9285 · Severity: critical · Ecosystem: pip — Incorrect Permission Assignment for Critical Resource in Plone
| URL | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2021/05/22/1 | Mailing List Third Party Advisory |
| https://plone.org/security/hotfix/20210518/writing-arbitrary-files-via-docutils-and-python-script | Vendor Advisory |