CVE-2026-61840

Quest Bot is an opensource Discord Bot. Prior to 1.1.9, the `image to GIF` command uses a request helper that validates a hostname's public IP addresses but then sends the actual request by hostname, causing a `second DNS lookup`. An attacker controlling a domain can return a public address during validation and an internal address during the connection, bypassing the internal-address protection through `DNS rebinding`. The command takes its address directly from user input and its developer-only gate is disabled in normal deployments, so any member of a server with the bot can trigger the flaw without special permissions. Requests are restricted to `HTTPS on port 443`, and content is returned only when the response is a `genuine image`. The impact is therefore mostly blind internal probing with limited retrieval of image responses from loopback or internal endpoints, not arbitrary internal-data disclosure. Common cloud metadata services using plain HTTP on another port are not reachable through this path. This issue is fixed in version 1.1.9.

CVSS

No CVSS.

References

Link	Resource
https://github.com/vantern-org/questbot/commit/eec5f57eda8caa37cd46520c57b3c01efef2b99b
https://github.com/vantern-org/questbot/security/advisories/GHSA-hrp5-g9r6-8rq4

Configurations

No configuration.

History

30 Oct 2026, 19:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-30 19:18

Updated : 2026-10-30 23:17

NVD link : CVE-2026-61840

Mitre link : CVE-2026-61840

CVE.ORG link : CVE-2026-61840

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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