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Vulnerabilities / CVE-2021-44223

critical

CVE-2021-44223

WordPress before 5.8 lacks support for the Update URI plugin header. T ...

Published Modified
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Bitnami9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD, Bitnami.

Description

WordPress before 5.8 lacks support for the Update URI plugin header. This makes it easier for remote attackers to execute arbitrary code via a supply-chain attack against WordPress installations that use any plugin for which the slug satisfies the naming constraints of the WordPress.org Plugin Directory but is not yet present in that directory.

Affected packages and fixed versions

SourcePackageFixed in
bitnami::Bitnami Vulnerability Databasewordpress, wordpress-multisite5.8.0
debian 10wordpressno fix listed
debian 11wordpressno fix listed
debian 12wordpress5.8.1+dfsg1-1
debian 13wordpress5.8.1+dfsg1-1
debian 14wordpress5.8.1+dfsg1-1
debian 9wordpressno fix listed
echowordpress5.8.1+dfsg1-1
Show all 9 entries from 8 sources
SourcePackageFixed in
bitnami::Bitnami Vulnerability Databasewordpress5.8.0
bitnami::Bitnami Vulnerability Databasewordpress-multisite5.8.0
debian 10wordpressno fix listed
debian 11wordpressno fix listed
debian 12wordpress5.8.1+dfsg1-1
debian 13wordpress5.8.1+dfsg1-1
debian 14wordpress5.8.1+dfsg1-1
debian 9wordpressno fix listed
echowordpress5.8.1+dfsg1-1

References

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.