{"id":"CVE-2026-50127","summary":"Weblate SSRF: outbound URL guard misses the NAT64 well-known prefix (64:ff9b::/96)","details":"Weblate is a web based localization tool. From version 5.15 to before version 2026.6, Weblate's VCS_RESTRICT_PRIVATE 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. This issue has been patched in version 2026.6.","aliases":["GHSA-vmfc-9982-2m45"],"modified":"2026-07-08T08:13:42.772957378Z","published":"2026-06-10T19:56:37.829Z","related":["openSUSE-SU-2026:11051-1"],"database_specific":{"cwe_ids":["CWE-918"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50127.json","cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/WeblateOrg/weblate/releases/tag/weblate-2026.6"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50127.json"},{"type":"ADVISORY","url":"https://github.com/WeblateOrg/weblate/security/advisories/GHSA-vmfc-9982-2m45"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50127"},{"type":"FIX","url":"https://github.com/WeblateOrg/weblate/pull/19768"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/weblateorg/weblate","events":[{"introduced":"a6bf0680599015a4b73b7992a3f60ad2451b415a"},{"fixed":"37bbc41a979f5d3d20d8a3976784af8a3ca6c91a"}],"database_specific":{"extracted_events":[{"introduced":"5.15"},{"fixed":"2026.6"},{"introduced":"0"}],"source":["AFFECTED_FIELD","DESCRIPTION","REFERENCES"]}}],"versions":["weblate-2026.5","weblate-5.17.1","weblate-5.17","weblate-5.16.1","weblate-5.16","weblate-5.15.2","weblate-5.15.1","weblate-5.15"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50127.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}