Astra <= 4.12.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Meta
| CVE | CVE-2026-3534 |
|---|---|
| CVSS | 6.4 (Medium) |
| Publicly Published | March 10, 2026 |
| Last Updated | March 11, 2026 |
| Researcher |
at1as
- Self-Employed
|
Description
The Astra theme for WordPress is vulnerable to Stored Cross-Site Scripting via the `ast-page-background-meta` and `ast-content-background-meta` post meta fields in all versions up to, and including, 4.12.3. This is due to insufficient input sanitization on meta registration and missing output escaping in the `astra_get_responsive_background_obj()` function for four CSS-context sub-properties (`background-color`, `background-image`, `overlay-color`, `overlay-gradient`). This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.
References
- themes.trac.wordpress.org
- themes.trac.wordpress.org
- themes.trac.wordpress.org
- themes.trac.wordpress.org
- themes.trac.wordpress.org
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Vulnerability Details for Astra
| Software Type | Theme |
|---|---|
| Software Slug | astra (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 4.12.4, or a newer patched version |
| Affected Version |
|
| Patched Version |
|
Recent vulnerabilities in Astra
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | Astra <= 4.6.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via Display Name | CVE-2024-2347 | stealthcopter | March 25, 2024 | |
| 2 | Astra <= 4.6.4 - Authenticated (Editor+) Stored Cross-Site Scripting via Theme Header/Footer | CVE-2024-29768 | SavPhill (Savphill) | March 25, 2024 |
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