Admin access check missing in SMS Alert billing phone disclosure
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-200.
Summary
The SMS Alert WordPress plugin from 3.6.4 before 4.0.1 does not check that the acting administrator may manage the selected users before returning their stored billing phone numbers. On a WordPress multisite network, an administrator of one site can disclose the phone numbers of users belonging to other sites on that network. The attacker needs a high-privilege administrator account, and the flaw only applies when the plugin's gateway credentials are stored on the acting administrator's own site. The flaw is classified as CWE-200, exposure of sensitive information to an unauthorized actor.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
The SMS Alert WordPress plugin before 4.0.1 does not check that the acting administrator is allowed to manage the selected users before returning their stored billing phone numbers, allowing an administrator of one site on a multisite network to disclose the phone numbers of users who belong to other sites on that network. This affects multisite only, and requires the SMS Alert WordPress plugin before 4.0.1's gateway credentials to be stored on the acting administrator's own site.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | SMS Alert | 3.6.4 to before 4.0.1 | 4.0.1 | Patch available | CNA |
- SMS Alert VendorUnknown Affected 3.6.4 to before 4.0.1 Fixed in 4.0.1 Patch available CNA
Remediation
Update SMS Alert to version 4.0.1, which fixes the flaw.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
- Fix · CNA SMS Alert (Unknown) Fixed in 4.0.1
Timeline
- 2026-10-08 Threatist record created from CVE-2026-94258
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences