id: PYSEC-2026-3416
published: "2026-07-13T15:46:29.565097Z"
modified: "2026-07-13T16:07:30.918681Z"
aliases:
- CVE-2026-50127
- GHSA-vmfc-9982-2m45
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."
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
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
severity:
- type: CVSS_V3
  score: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N