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CVE PROGRAM SOURCE RECORD5.9 Medium

CVE-2026-50127

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

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

WeblateOrg weblate

  • >= 5.15, < 2026.6affected

References