CVE-2026-48764
HighCVSS 8.2Exploitation Probability (EPSS)
Low risk19th percentile — higher than 19% of all known CVEs
Summary
TypeBot is a chatbot builder tool that in versions prior to 3.17.2 has a vulnerability in SSRF validation. The issue is that the IP validation is not properly tied to subsequent requests, allowing attackers to exploit DNS rebinding to bypass protections.
Risk Assessment
Organizations may be exposed to unauthorized access to private network services and metadata disclosure, potentially leading to credential theft and further compromises.
Recommendation
It is recommended to update TypeBot to version 3.17.2 or later to mitigate this vulnerability and implement additional security measures to protect against SSRF attacks.
Original NVD description (English source)
TypeBot is a chatbot builder tool. In versions prior to 3.17.2, SSRF validation is implemented by resolving a hostname once and checking whether the resolved IP belongs to a forbidden range allowing for DNS rebinding bypass. The root cause is a time-of-check to time-of-use gap in the SSRF guard. The validator resolves the hostname and approves it, but the later request path performs a fresh resolution and connects to whatever IP the hostname maps to at that moment. The actual outbound request is then performed later using the original hostname, without pinning the validated IP to the network connection. An attacker who can supply a URL to a public bot that performs a server-side HTTP Request block or server-side script fetch can use DNS rebinding to pass the initial validation and still force the server to connect to a private or metadata address during the real request. This enables server-side access to private network services, cloud metadata endpoints, and other internal HTTP targets that the validator was intended to block. The exact downstream impact depends on the reachable internal services. Concrete consequences include metadata disclosure, access to internal admin panels, credential theft from metadata services, and further compromise through internal-only HTTP interfaces. This issue has been fixed in version 3.17.2.