SMS Alert <= 3.9.7 — Unauthenticated Authentication Bypass to Account Takeover via 'billing_phone' Parameter
CVE-2026-15014Published · Updated Action summary
Affected: ≤3.9.7Update to 3.9.8 or newer
All remediation steps- Severity
- Critical9.8
- CVSS
- 9.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
SMS Alert – SMS Notifications & OTP Login, COD Verification, Abandoned Cart Recovery sms-alert
- Affected≤ 3.9.7
- Patched in3.9.8
Update to 3.9.8 or newer.
You are affected if you run ≤ 3.9.7. Version 3.9.8 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under SMS Alert – SMS Notifications & OTP Login, COD Verification, Abandoned Cart Recovery.
- 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 3.9.8, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch SMS Alert – SMS Notifications & OTP Login, COD Verification, Abandoned Cart Recovery to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Civitasmass.
The SMS Alert – SMS & OTP for WooCommerce, Order Notifications & Abandoned Cart Recovery plugin for WordPress is vulnerable to Authentication Bypass leading to Account Takeover in all versions up to, and including, 3.9.7 via the `billing_phone` parameter. This is due to the `processRegistration()` function using a phone-unbound `$_SESSION['sa_mobile_verified']` boolean flag as the sole gate before issuing an authentication cookie — the flag is set to `true` after any successful OTP validation without being bound to the specific phone number that was verified. This makes it possible for unauthenticated attackers to complete OTP verification for a phone number they control, then resubmit the registration request with a victim's `billing_phone` value to have `wp_set_auth_cookie()` called for the resolved victim account, enabling full authentication as any existing WordPress user whose registered phone number is known or guessable, including administrators. CVE-2026-66424 is likely a duplicate of this.
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 SMS Alert – SMS Notifications & OTP Login, COD Verification, Abandoned Cart Recovery
All 30| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.3 | Unauthenticated Privilege Escalation ≤4.0.2Update to 4.0.3 | CVE-2026-116386 | |
| Medium4.3 | Missing Authorization ≤4.0.1Update to 4.0.2 | CVE-2026-110882 | |
| Low2.7 | 4.0.0 - Authenticated (Administrator+) Information Exposure 3.6.4 – 4.0.0Update to 4.0.1 | CVE-2026-94258 | |
| Critical9.8 | Unauthenticated Arbitrary Account Takeover ≤4.0.0Update to 4.0.1 | CVE-2026-94256 | |
| High7.3 | 4.0.0 - Unauthenticated Privilege Escalation 3.9.6 – 4.0.0Update to 4.0.1 | CVE-2026-94257 |
- High7.3Unauthenticated Privilege Escalation
≤4.0.2Update to 4.0.3
- Medium4.3Missing Authorization
≤4.0.1Update to 4.0.2
- Low2.74.0.0 - Authenticated (Administrator+) Information Exposure
3.6.4 – 4.0.0Update to 4.0.1
- Critical9.8Unauthenticated Arbitrary Account Takeover
≤4.0.0Update to 4.0.1
- High7.34.0.0 - Unauthenticated Privilege Escalation
3.9.6 – 4.0.0Update to 4.0.1
Timeline
CVE published
Severity critical, CVSS 9.8
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.