RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging <= 5.0.11 — Unauthenticated DOM-Based Reflected Cross-Site Scripting via postMessage
CVE-2026-2433Published · Updated Action summary
Affected: ≤5.0.11Update to 5.0.12 or newer
All remediation steps- Severity
- Medium6.1
- CVSS
- 6.1CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:RUser interaction- Required
S:CScope- Changed
C:LConfidentiality- Low
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-79 Cross-Site Scripting
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
WP RSS Aggregator – RSS Import, Feed to Post, Autoblogging, AI Content wp-rss-aggregator
- Affected≤ 5.0.11
- Patched in5.0.12
Update to 5.0.12 or newer.
You are affected if you run ≤ 5.0.11. Version 5.0.12 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under WP RSS Aggregator – RSS Import, Feed to Post, Autoblogging, AI Content.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 5.0.12, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch WP RSS Aggregator – RSS Import, Feed to Post, Autoblogging, AI Content to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Osvaldo Noe Gonzalez Del Rio (Os).
The RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging plugin for WordPress is vulnerable to DOM-Based Cross-Site Scripting via postMessage in all versions up to, and including, 5.0.11. This is due to the plugin's admin-shell.js registering a global message event listener without origin validation (missing event.origin check) and directly passing user-controlled URLs to window.open() without URL scheme validation. This makes it possible for unauthenticated attackers to execute arbitrary JavaScript in the context of an authenticated administrator's session by tricking them into visiting a malicious website that sends crafted postMessage payloads to the plugin's admin page.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in WP RSS Aggregator – RSS Import, Feed to Post, Autoblogging, AI Content
All 13| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Reflected Cross-Site Scripting via 'template' Parameter ≤5.0.10Update to 5.0.11 | CVE-2026-1216 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting via wp-rss-aggregator Shortcode ≤5.0.10Update to 5.0.11 | CVE-2025-14745 | |
| Medium6.1 | Reflected Cross-Site Scripting via className ≤5.0.10Update to 5.0.11 | CVE-2025-14375 | |
| Medium4.3 | Missing Authorization ≤4.23.12Update to 4.23.13 | CVE-2024-9583 | |
| Medium4.3 | Missing Authorization to Authenticated (Subscriber+) Feed State Update ≤4.23.11Update to 4.23.12 | CVE-2024-6621 |
- High7.2Reflected Cross-Site Scripting via 'template' Parameter
≤5.0.10Update to 5.0.11
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via wp-rss-aggregator Shortcode
≤5.0.10Update to 5.0.11
- Medium6.1Reflected Cross-Site Scripting via className
≤5.0.10Update to 5.0.11
- Medium4.3Missing Authorization
≤4.23.12Update to 4.23.13
- Medium4.3Missing Authorization to Authenticated (Subscriber+) Feed State Update
≤4.23.11Update to 4.23.12
Same weakness (Cross-Site Scripting)
All Cross-Site Scripting| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- 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
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
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Timeline
CVE published
Severity medium, CVSS 6.1
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.