PYSEC-2026-3416

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Import Source
https://github.com/pypa/advisory-database/blob/main/vulns/weblate/PYSEC-2026-3416.yaml
JSON Data
https://api.osv.dev/v1/vulns/PYSEC-2026-3416
Aliases
Published
2026-07-13T15:46:29.565097Z
Modified
2026-07-13T16:32:10.367257081Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
Weblate SSRF: outbound URL guard misses some private ranges
Details

Impact

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.

Patches

  • https://github.com/WeblateOrg/weblate/pull/19768

Resources

The issue was reported by @tonghuaroot via GitHub, and the same user also provided the initial patch.

References

Affected packages

PyPI / weblate

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.15
Fixed
2026.6

Affected versions

5.*
5.15
5.15.1
5.15.2
5.16
5.16.1
5.16.2
5.17
5.17.1
2026.*
2026.5

Database specific

source
"https://github.com/pypa/advisory-database/blob/main/vulns/weblate/PYSEC-2026-3416.yaml"