CVE-2026-33399CWE-918

Wallos: SSRF Bypass - Incomplete Fix for CVE-2026-30839/30840

High · published March 24, 2026

CVSS v3.1
7.7
EPSS
0%
Percentile
34.5
In the wild
Unconfirmed
What it is

Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.7.0, the SSRF fix applied in version 4.6.2 for CVE-2026-30839 and CVE-2026-30840 is incomplete. The validate_webhook_url_for_ssrf() protection was added to the test* notification endpoints but not to the corresponding save* endpoints. An authenticated user can save an internal/private IP address as a notification URL, and when the cron job sendnotifications.php executes, the request is sent to the internal IP without any SSRF validation. This issue has been patched in version 4.7.0.

The record
Technical detail
CVSS v3.1
7.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00413 · 34.5th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-03-24T17:43Z
EPSS history
Timeline
  • 24 MAR 17:43Z
    Wallos: SSRF Bypass - Incomplete Fix for CVE-2026-30839/30840
    cvelistv5