XSS in Wordpress
CVE-2020-4049
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…
EPSS: 0.027 (84.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 2.4 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N.
Affected products
- Wordpress
- Wordpress Wordpress-develop — versions >= 5.4.0, < 5.4.2, >= 5.3.0, < 5.3.4, >= 5.2.0, < 5.2.7
- Debian Debian_linux — versions 8.0, 9.0, 10.0
- Fedoraproject Fedora — versions 31, 32
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_MISC, Vendor Advisory)
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (x_refsource_FEDORA, vendor-advisory)
- security-advisories@github.com (x_refsource_FEDORA, vendor-advisory)
- security-advisories@github.com (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- security-advisories@github.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security-advisories@github.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-4049?
- CVE-2020-4049 is a low-severity vulnerability in Wordpress, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 2.4/10. Published 2020-06-12.
- How severe is CVE-2020-4049?
- Low severity. CVSS v3 base score is 2.4 out of 10.
- Is CVE-2020-4049 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.