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CVE-2020-28036: wp-includes/class-wp-xmlrpc-server.php in WordPress before 5.5.2 allows attackers to gain privileges by using XML-RPC to comment on a post.

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

wp-includes/class-wp-xmlrpc-server.php in WordPress before 5.5.2 allows attackers to gain privileges by using XML-RPC to comment on a post.

Package
WordPress core WordPress
Affected versions
<5.5.2
Fixed in
5.5.2
Severity
critical  CVSS 9.8
Exploitation
not on CISA KEV · EPSS 5% (92.5th percentile)
Published
2020-11-02
Source
nvd

References

CWE-862
NVD recordWordPress core advisories

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