SSRF via DNS rebinding after hostname validation
Published Jun 17, 2026 · Updated Jun 17, 2026
SSRF in Typebot before 3.17.2 allows remote attackers to access private HTTP services through a public bot request flow. validateHttpReqUrl resolves and approves a hostname once, but the later HTTP and script fetch paths resolve the original hostname again for the connection. A public bot must pass attacker-controlled input into an HTTP Request block or server-side script fetch, enabling reads from reachable internal or metadata endpoints.
Summary
What happened
SSRF in Typebot before 3.17.2 allows remote attackers to access private HTTP services through a public bot request flow. validateHttpReqUrl resolves and approves a hostname once, but the later HTTP and script fetch paths resolve the original hostname again for the connection. A public bot must pass attacker-controlled input into an HTTP Request block or server-side script fetch, enabling reads from reachable internal or metadata endpoints.
The record
- CVE
- CVE-2026-48764
- Published
- Jun 17, 2026
- Updated
- Jun 17, 2026
- Vendor
- Typebot
- Product
- Typebot
- Classifications
- CWE-918, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 17, 2026CVE publishedPublication date reported by the CVE source.
- Jun 17, 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=< 3.17.2
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-hgqq-whf5-mrrf DNS-rebinding PoCproof of concept · demonstrated
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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