CVE-2021-29447 is an XML External Entity (XXE) injection vulnerability affecting WordPress installations running PHP 8, allowing authenticated users with file upload privileges (e.g., Authors) to access internal files via the Media Library. Rated Medium severity (CVSS 6.5), it has a low attack complexity and can lead to high confidentiality impact. While not listed on the KEV catalog, exploit code is publicly available on ExploitDB, and it has garnered significant community discussion and media coverage. WordPress versions 5.7.1 and older affected versions have been patched.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 5.6.0, < 5.7.1CPE matchmatch criteria | cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.