CVE-2026-50127 Weblate SSRF: outbound URL guard misses the NAT64 well-known prefix (64:ff9b::/96)

Weblate is a web based localization tool. From version 5.15 to before version 2026.6, Weblate's VCSRESTRICTPRIVATE did not properly account for some transitional IPv6 ranges, multicast addresses, or some semi-private IPv4 ranges, which allowed some addresses to bypass private range restrictions...

CC-Tweaked has an SSRF Protection Bypass with NAT64

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 an...

CC-Tweaked has an SSRF Protection Bypass with NAT64

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 an...

CC-Tweaked has an SSRF Protection Bypass with NAT64

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 an...

CC-Tweaked has an SSRF Protection Bypass with NAT64

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 an...