CVE-2026-77351Public exploitNetwork attack vector

SSRF via unvalidated user-level SMTP host

Published Aug 31, 2026 · Updated Sep 1, 2026

SSRF in ellite Wallos before 5.0.0 allows remote authenticated users to probe internal services via a stored SMTP host. The saveemailnotifications.php endpoint stores smtpaddress without validate_smtp_host(), and notification cron jobs assign it to PHPMailer. A non-admin account and enabled scheduled jobs are required; impact is limited to outbound TCP connections and SMTP-level interaction.

CVSS severity3.5
Low
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in ellite Wallos before 5.0.0 allows remote authenticated users to probe internal services via a stored SMTP host. The saveemailnotifications.php endpoint stores smtpaddress without validate_smtp_host(), and notification cron jobs assign it to PHPMailer. A non-admin account and enabled scheduled jobs are required; impact is limited to outbound TCP connections and SMTP-level interaction.

The record

CVE
CVE-2026-77351
Published
Aug 31, 2026
Updated
Sep 1, 2026
Vendor
ellite
Product
Wallos
Classifications
CWE-918, CAPEC-664, T1046
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 5.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ellite · Wallosversion=< 5.0.0

Published CVSS scores

3.5GitHubCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
CAPEC-664Server Side Request Forgery
T1046Network Service Discovery

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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