WordPress Core < 5.4.2 - Self-Cross Site Scripting via Theme Folder Name
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).
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress (core) | WordPress | < 3.7, >= 3.7, <= 3.7.33, >= 3.8, <= 3.8.33, >= 3.9, <= 3.9.31, >= 4.0, <= 4.0.30, >= 4.1, <= 4.1.30, >= 4.2, <= 4.2.27, >= 4.3, <= 4.3.23, >= 4.4, <= 4.4.22, >= 4.5, <= 4.5.21, >= 4.6, <= 4.6.18, >= 4.7, <= 4.7.17, >= 4.8, <= 4.8.13, >= 4.9, <= 4.9.14, >= 5.0, <= 5.0.9, >= 5.1, <= 5.1.5, >= 5.2, <= 5.2.6, >= 5.3, <= 5.3.3 | 3.7.34, 3.8.34, 3.9.32, 4.0.31, 4.1.31, 4.2.28, 4.3.24, 4.4.23, 4.5.22, 4.6.19, 4.7.18, 4.8.14, 4.9.15, 5.0.10, 5.1.6, 5.2.7, 5.3.4, 5.4.2 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N- Weakness (CWE)
CWE-79- Platform
- WordPress
- Package
WordPress- Disclosed
- 10.06.2020
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 92895f8e-59c9-4988-9d7a-2601880d71a2 - Wordfence Intelligence
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Vulnerability history: WordPress
All published vulnerabilities of this package (WordPress (core)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 385
- First → latest
- 06.2003 10.2026
- Without a fix
- 0
- Exploited in attacks
- 3
Severity breakdown
- Critical 16
- High 95
- Medium 263
- Low 11
Disclosures per year
- 2017: 39
- 2018: 15
- 2019: 22
- 2020: 23
- 2021: 5
- 2022: 20
- 2023: 14
- 2024: 4
- 2025: 2
- 2026: 36
earlier: 205
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