{"id":"PYSEC-2026-3416","summary":"Weblate SSRF: outbound URL guard misses some private ranges","details":"### Impact\n\nWeblate'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.\n\n### Patches\n\n* https://github.com/WeblateOrg/weblate/pull/19768\n\n### Resources\n\nThe issue was reported by @tonghuaroot via GitHub, and the same user also provided the initial patch.","aliases":["CVE-2026-50127","GHSA-vmfc-9982-2m45"],"modified":"2026-07-13T16:32:10.367257081Z","published":"2026-07-13T15:46:29.565097Z","references":[{"type":"WEB","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":"WEB","url":"https://github.com/WeblateOrg/weblate/pull/19768"},{"type":"PACKAGE","url":"https://github.com/WeblateOrg/weblate"},{"type":"WEB","url":"https://github.com/WeblateOrg/weblate/releases/tag/weblate-2026.6"},{"type":"PACKAGE","url":"https://pypi.org/project/weblate"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-vmfc-9982-2m45"}],"affected":[{"package":{"name":"weblate","ecosystem":"PyPI","purl":"pkg:pypi/weblate"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.15"},{"fixed":"2026.6"}]}],"versions":["2026.5","5.15","5.15.1","5.15.2","5.16","5.16.1","5.16.2","5.17","5.17.1"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/weblate/PYSEC-2026-3416.yaml"}}],"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"}]}