Jetpack 3.2 — 16.1.2 - Missing Authorization on WPCOM Media API Attachment Parent
f72c0a27-9602-4465-a14a-15c2a34e578bPublished · Updated Action summary
Affected: 3.2 – 16.1.2Update to 16.1.3 or newer
All remediation steps- Severity
- Medium4.3
- CVSS
- 4.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-862 Missing Authorization
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Jetpack – AI Agents & MCP, Security, Backup & Analytics jetpack
- Affected3.2 – 16.1.2
- Patched in16.1.3
Update to 16.1.3 or newer.
You are affected if you run 3.2 – 16.1.2. Version 16.1.3 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Jetpack – AI Agents & MCP, Security, Backup & Analytics.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 16.1.3, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Jetpack – AI Agents & MCP, Security, Backup & Analytics to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence.
The Jetpack – WP Security, Backup, Speed, & Growth plugin for WordPress is vulnerable to Missing Authorization in versions 3.2 through 16.1.2 via the WPCOM JSON API media upload and update endpoints. Early releases accepted the destination as post_ID, while later releases used parent_id; both values were written to an attachment’s post_parent without checking whether the caller could edit the destination post. Authorization was limited to upload_files and, in later update implementations, permission to edit the media item itself. This makes it possible for authenticated attackers with an account linked to the Jetpack connection and the upload_files capability, which is Author and above by default, to attach an arbitrary media item to a post they do not own. Where the target post uses a bare [gallery] shortcode or a theme that calls get_attached_media()/get_children(), the attacker's media then renders inside the victim's post. The endpoints are reached only through the WordPress.com HMAC-signed jetpack.jsonAPI XML-RPC proxy, not via a /wp-json route.
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 Jetpack – AI Agents & MCP, Security, Backup & Analytics
All 33| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Missing Authorization ≤16.2Update to 16.3 | CVE-2026-106601 | |
| Medium5.3 | Missing Authorization ≤16.2Update to 16.3 | CVE-2026-106602 | |
| High7.2 | 16.1.2 - Unauthenticated Stored Cross-Site Scripting 16.1 – 16.1.2Update to 16.1.3 | — | |
| Medium6.6 | 16.1.2 - Authenticated (Administrator+) PHP Object Injection 16.1 – 16.1.2Update to 16.1.3 | — | |
| Medium6.6 | 16.1.2 - Authenticated (Administrator+) PHP Object Injection 16.1 – 16.1.2Update to 16.1.3 | — |
- Medium5.3Missing Authorization
≤16.2Update to 16.3
- Medium5.3Missing Authorization
≤16.2Update to 16.3
- High7.216.1.2 - Unauthenticated Stored Cross-Site Scripting
16.1 – 16.1.2Update to 16.1.3
- Medium6.616.1.2 - Authenticated (Administrator+) PHP Object Injection
16.1 – 16.1.2Update to 16.1.3
- Medium6.616.1.2 - Authenticated (Administrator+) PHP Object Injection
16.1 – 16.1.2Update to 16.1.3
Same weakness (Missing Authorization)
All Missing Authorization| 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
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity medium, CVSS 4.3
Record last updated
Sources & licenses
- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- 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.