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Astra <= 4.12.3 — Authenticated (Contributor+) Stored Cross-Site Scripting via Post Meta

CVE-2026-3534Published · Updated

Action summary

Affected: ≤4.12.3Update to 4.12.4 or newer

All remediation steps
Watch theme
Medium6.4CVSS 3.16.4CISA KEVNot listedAccessUnknown
On this page3

Overview

Advisory ID
CVE-2026-3534
Product
Astra astra
Affected
≤4.12.3
Fixed in
4.12.4
Required access
Unknown
Published
· updated
Credit
at1as
  1. Affected≤ 4.12.3
  2. Patched in4.12.4

Update to 4.12.4 or newer.

6.4
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:L Privileges required
Low
UI:N User interaction
None
S:C Scope
Changed
C:L Confidentiality
Low
I:L Integrity
Low
A:N Availability
None

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.

Not sure which version you run? Run a passive check — it reads public files only.

Remediation & mitigations

  1. Update to version 4.12.4, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.

References & provenance

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

Related CVEs

More vulnerabilities in Astra
SeverityVulnerabilityCVEPublished
High7.2Authenticated (Shop Manager+) Arbitrary CSS Injection
≤4.13.12Update to 4.14.0
CVE-2026-27085
Medium5.5Authenticated (Editor+) Stored Cross-Site Scripting via Theme Header/Footer
≤4.6.4Update to 4.6.5
CVE-2024-29768
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via Display Name
≤4.6.8Update to 4.6.9
CVE-2024-2347
Other Cross-Site Scripting vulnerabilities
SeverityVulnerabilityCVEPublished
Medium6.4Authenticated (Contributor+) DOM-Based Stored Cross-Site Scripting via 'data-text-sec', 'data-title', and 'title' Attributes via Custom HTML Block
Flatsome≤3.20.12Update to 3.20.13
CVE-2026-18742
High7.1Unauthenticated PHP Object Injection to Arbitrary File Deletion via 'comment_content'/'comment_agent' Parameter during Attachment Rename
Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization≤4.2.19Update to 4.2.20VulnCrest analysis
CVE-2026-124969
Critical9.8Missing Authorization to Unauthenticated Arbitrary User Password Reset / Account Takeover via Webhook with 'Is the user ID' Field
AutomatorWP Webhooks≤1.4.4Update to 1.4.5
CVE-2026-126173
High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup≤5.25.25Update to 5.26.45
CVE-2026-120688

Timeline

  1. CVE published

    Severity medium, CVSS 6.4

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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