Login as User or Customer < 1.8 — Missing Authorization to Arbitrary Plugin Installation/Activation
CVE-2021-24195Published · Updated Action summary
Affected: <1.8Update to 1.8 or newer
All remediation steps- Severity
- High8.8
- CVSS
- 8.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Weakness
- CWE-862 Missing Authorization
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Login as User or Customer — User Switching login-as-customer-or-user
- Affected< 1.8
- Patched in1.8
Update to 1.8 or newer.
You are affected if you run < 1.8. Version 1.8 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Login as User or Customer — User Switching.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 1.8, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Login as User or Customer — User Switching to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Bugbang.
Low privileged users can use the AJAX action 'cp_plugins_do_button_job_later_callback' in the Login as User or Customer (User Switching) WordPress plugin before 1.8, to install any plugin (including a specific version) from the WordPress repository, as well as activate arbitrary plugin from then blog, which helps attackers install vulnerable plugins and could lead to more critical vulnerabilities like RCE.
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 Login as User or Customer — User Switching
All 5| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High8.1 | Unauthenticated Limited Admin Account Compromise 3.8 – 3.8No patch available | CVE-2023-7247 | |
| Critical9.8 | Authentication Bypass ≤3.8Update to 3.9.1 | CVE-2023-51484 | |
| Critical9.8 | Privilege Escalation ≤3.2Update to 3.3 | CVE-2022-4305 | |
| High8.8 | Cross-Site Request Forgery to Arbitrary Plugin Installation/Activation ≤1.9Update to 2.1 | — |
- High8.1Unauthenticated Limited Admin Account Compromise
3.8 – 3.8No patch available
- Critical9.8Authentication Bypass
≤3.8Update to 3.9.1
- Critical9.8Privilege Escalation
≤3.2Update to 3.3
- High8.8Cross-Site Request Forgery to Arbitrary Plugin Installation/Activation
≤1.9Update to 2.1
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 high, CVSS 8.8
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. 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.