XSS in WordPress
CVE-2022-21662
WordPress is a free and open-source content management system written in PHP and paired with a MariaDB database. Low-privileged authenticated users (like author) in WordPress core are able to execute JavaScript/perform stored XSS attack, which can affect high-privileged users. This has been patched in WordPress version 5.8.3. Older affected versions are also fixed via security release, that go back till 3.7.37. We strongly recommend that you keep auto-updates enabled. There are no known workarounds for this issue.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.645 (99.2th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.645 · newest: 0.645 · change: 0.000
Affected products
- WordPress
- WordPress Wordpress-Develop — versions < 5.8.3
- Debian Linux — versions 9.0, 10.0, 11.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wordpress.org/news/2022/01/wordpress-5-8-3-security-release/ (Release Notes, Vendor Advisory)
- github.com/WordPress/wordpress-develop/security/advisories/GHSA-699q-3hj9-889w (Third Party Advisory)
- www.debian.org/security/2022/dsa-5039 (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.debian.org/debian-lts-announce/2022/01/msg00019.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-21662?
- CVE-2022-21662 is a high-severity vulnerability in WordPress, classified under Cross-site Scripting. CVSS score: 8.0/10. Published 2022-01-06.
- How severe is CVE-2022-21662?
- High severity. CVSS v3 base score is 8.0 out of 10.
- Is CVE-2022-21662 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.