Authenticated internal-service response disclosure via unvalidated webhook URL
Published Mar 7, 2026 · Updated Mar 7, 2026
SSRF in Wallos before 4.6.2 allows remote authenticated users to read internal HTTP service responses through its webhook test endpoint. The testwebhooknotifications.php endpoint passes a caller-supplied URL directly to curl_exec after checking only its scheme, then includes the resulting response body in its JSON reply. A valid account and CSRF token are required; the caller controls the method, body, headers, and URL, but the reported impact is limited to reading reached services.
Summary
What happened
SSRF in Wallos before 4.6.2 allows remote authenticated users to read internal HTTP service responses through its webhook test endpoint. The testwebhooknotifications.php endpoint passes a caller-supplied URL directly to curl_exec after checking only its scheme, then includes the resulting response body in its JSON reply. A valid account and CSRF token are required; the caller controls the method, body, headers, and URL, but the reported impact is limited to reading reached services.
The record
- CVE
- CVE-2026-30839
- Published
- Mar 7, 2026
- Updated
- Mar 7, 2026
- Vendor
- ellite
- Product
- Wallos
- Classifications
- CWE-918, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 7, 2026CVE publishedPublication date reported by the CVE source.
- Mar 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.
- Affected versionversion=< 4.6.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
- GHSA-x4qp-xm2c-vqg9 webhook SSRF proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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