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CVE-2020-28039: is_protected_meta in wp-includes/meta.php in WordPress before 5.5.2 allows arbitrary file deletion because it does not properly determine whether a meta key is considered protected.

critical Affects WordPress core. Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

is_protected_meta in wp-includes/meta.php in WordPress before 5.5.2 allows arbitrary file deletion because it does not properly determine whether a meta key is considered protected.

Package
WordPress core WordPress
Affected versions
<5.5.2
Fixed in
5.5.2
Severity
critical  CVSS 9.1
Exploitation
not on CISA KEV · EPSS 4% (90.7th percentile)
Published
2020-11-02
Source
nvd

References

NVD recordWordPress core advisories

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