Vulnerability · Published Jul 21, 2026 · Assigned by GitHub_M

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

High 7.1

In plain English

A high-severity server-side request forgery in CC-Tweaked from cc-tweaked. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)7.1High

Exploit odds (30 days)0.5%top 59.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Maven	cc.tweaked:cc-tweaked-1.19.3-core	1.119.0	GHSA-5jh9-2h63-pw4q
Maven	cc.tweaked:cc-tweaked-1.19.4-core	1.119.0	GHSA-5jh9-2h63-pw4q
Maven	cc.tweaked:cc-tweaked-1.20-core	1.119.0	GHSA-5jh9-2h63-pw4q
Maven	cc.tweaked:cc-tweaked-1.20.1-core	1.119.0	GHSA-5jh9-2h63-pw4q
Maven	cc.tweaked:cc-tweaked-1.20.4-core	1.119.0	GHSA-5jh9-2h63-pw4q
Maven	cc.tweaked:cc-tweaked-1.20.5-core	1.119.0	GHSA-5jh9-2h63-pw4q
Maven	cc.tweaked:cc-tweaked-1.20.6-core	1.119.0	GHSA-5jh9-2h63-pw4q
Maven	cc.tweaked:cc-tweaked-1.21-core	1.119.0	GHSA-5jh9-2h63-pw4q

Affected products (as reported)

Vendor	Product	Versions
cc-tweaked	CC-Tweaked	< 1.119.0

Weakness: CWE-918 · 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

References

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