DescriptionWordPress version 4.9.8 and earlier contains a CWE-20 Input Validation vulnerability in thumbnail processing that can result in remote code execution due to an incomplete fix for CVE-2017-1000600. This attack appears to be exploitable via thumbnail upload by an authenticated user and may require additional plugins in order to be exploited however this has not been confirmed at this time.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
wordpress (PTS)stretch4.7.5+dfsg-2+deb9u6undetermined
stretch (security)4.7.21+dfsg-0+deb9u1undetermined
buster (security)5.0.14+dfsg1-0+deb10u1undetermined
bullseye (security)5.7.3+dfsg1-0+deb11u1undetermined
bookworm, sid5.8.1+dfsg1-2undetermined

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


This CVE exists due to an incomplete fix in 4.9 for CVE-2017-1000600.

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