What’s Vulnerable › Vulnerabilities

CVE-2026-61638: Wallos: SSRF via Test Email Notification - unvalidated SMTP host/port

• Severity: high (CVSS 8.2 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-31 · updated 2026-09-08
• Weakness: CWE-918

Description

Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.9.6, POST /endpoints/notifications/testemailnotifications.php accepts smtpaddress and smtpport from POST body with zero SSRF validation. PHPMailer connects to attacker-supplied host:port. Every other notification endpoint uses ssrf_helper.php but email was missed. Any authenticated user can probe internal network, cloud metadata. This issue has been patched in version 4.9.6.

Affected products

• ellite Wallos: before 4.9.6

References

• https://github.com/ellite/Wallos/commit/b75f13d0ffa3ed7e77e8e79e4b9fd3fc528c98d3
• https://github.com/ellite/Wallos/pull/1092
• https://github.com/ellite/Wallos/releases/tag/v4.9.6
• https://github.com/ellite/Wallos/security/advisories/GHSA-f8r5-v75m-385h

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