Authenticated self-XSS via theme uploads in WordPress
In affected versions of WordPress, when uploading themes, the name of the theme folder can be crafted in a way that could lead to JavaScript execution in /wp-admin on the themes page. This does require an admin to upload the theme, and is low severity self-XSS. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2020-4049US | low2.4 | — | ||
In affected versions of WordPress, when uploading themes, the name of the theme folder can be crafted in a way that could lead to JavaScript execution in /wp-admin on the themes pa… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/WordPress/wordpress-develop/commit/404f397b4012fd9d382e55bf7d206c1317f01148ADVISORY
- https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-87h4-phjv-rm6pADVISORY
- https://lists.debian.org/debian-lts-announce/2020/07/msg00000.htmlADVISORY
- https://lists.debian.org/debian-lts-announce/2020/09/msg00011.htmlADVISORY
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/773N2ZV7QEMBGKH6FBKI6Q5S3YJMW357/WEB
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODNHXVJS25YVWYQHOCICXTLIN5UYJFDN/WEB
- https://nvd.nist.gov/vuln/detail/CVE-2020-4049WEB
- https://wordpress.org/news/2020/06/wordpress-5-4-2-security-and-maintenance-release/ADVISORY
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