cbcvebase.
CVE-2026-3534
published 2026-03-11

CVE-2026-3534: 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…

PriorityP431medium6.4CVSS 3.1
AVNACLPRLUINSCCLILAN
EPSS
0.20%
9.9th percentile
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.

Affected

2 ranges
VendorProductVersion rangeFixed in
brainstormforceastra<= 4.12.3
parse-communityparse-dashboard>= 7.3.0-alpha.42 < 9.0.0-alpha.89.0.0-alpha.8
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.