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CVE-2026-48763

8.2 · HIGH

TypeBot is a chatbot builder tool.

Published Aug 11, 2026CWE-862EPSS 0.53%

Overview

CVE-2026-48763 is a high-severity vulnerability. It was published on August 11, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

TypeBot is a chatbot builder tool. Versions prior to 3.17.0 expose a deprecated public upload endpoint at `GET /api/v1/typebots/{typebotId}/blocks/{blockId}/storage/upload-url` that accepts an attacker-controlled `filePath` and returns a presigned S3 `PUT` URL for that exact key. Because the endpoint only checks that the referenced typebot is public and that the referenced block is a file input block, an unauthenticated attacker who knows a valid public `typebotId` and `blockId` can request presigned upload URLs for arbitrary objects in the shared bucket, including `private/...` and other tenants' `public/...` paths. Version 3.17.0 fixes this issue.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/baptisteArno/typebot.io/commit/7ae4c007d0987d2ca907b47e1b7418db62b8a157GitHubgithub.com/baptisteArno/typebot.io/pull/2459GitHubgithub.com/baptisteArno/typebot.io/releases/tag/v3.17.0GitHubgithub.com/baptisteArno/typebot.io/security/advisories/GHSA-m7f5-3wcm-x2c4GitHubgithub.com/baptisteArno/typebot.io/security/advisories/GHSA-m7f5-3wcm-x2c4

How CyberStrike helps

Frequently asked questions

What is CVE-2026-48763?

CVE-2026-48763 is a high-severity vulnerability. It was published on August 11, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

How severe is CVE-2026-48763?

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-48763?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-48763?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-48763 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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