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CVE-2026-33399

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

Published: Mar 24, 2026Updated: Mar 26, 2026 Sources: CVE List NVDCWE-918
NVD MITRE
7.7CVSSHIGH
EPSS Score
0.3%
Top 80.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-918

Affected Products

Wallosellite
On-prem
Networking Infrastructure / network-management
walloswallosapp
On-prem
Web & CMS Plugins / site-builder
elliteNetworking Infrastructureaka wallos
wallosapposs-projectWeb & CMS Pluginsaka wallos

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Command and Control
Initial Access
View detailed technique mapping

References

https://github.com/ellite/Wallos/security/advisories/GHSA-mfjc-3258-cq3j
github.com
https://github.com/ellite/Wallos/commit/e87387f0ebb540cd33e6dfda7181db9db650ecef#diff-d77202c5d47a3d7d4586e519f6f5e256da5fb2969fa8b9c75c399b2821e9de40
github.com

Timeline

Published
Mar 24, 2026
Last Updated
Mar 26, 2026

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