CVE-2026-41687Public exploitNetwork attack vector

Authenticated SSRF via omitted CGNAT address check

Published May 7, 2026 · Updated May 7, 2026

SSRF in Wallos before 4.8.1 allows remote authenticated users to probe internal CGNAT services through crafted logo URLs. The subscription and payment add endpoints apply PHP private and reserved-range filters but omit the existing CGNAT check before fetching logo or icon URLs. A valid session and CSRF token are required; responses are discarded unless they are images, limiting the result to blind requests, port scanning, and service discovery.

CVSS severity4.3
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Wallos before 4.8.1 allows remote authenticated users to probe internal CGNAT services through crafted logo URLs. The subscription and payment add endpoints apply PHP private and reserved-range filters but omit the existing CGNAT check before fetching logo or icon URLs. A valid session and CSRF token are required; responses are discarded unless they are images, limiting the result to blind requests, port scanning, and service discovery.

The record

CVE
CVE-2026-41687
Published
May 7, 2026
Updated
May 7, 2026
Vendor
ellite
Product
Wallos
Classifications
CWE-918, T1190, T1046
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 7, 2026CVE publishedPublication date reported by the CVE source.
  2. May 7, 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=< 4.8.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ellite · Wallosversion=< 4.8.1

Published CVSS scores

4.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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.

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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)
T1190Exploit Public-Facing Application
T1046Network Service Scanning

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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