CVE-2026-50127
Weblate SSRF: outbound URL guard misses the NAT64 well-known prefix (64:ff9b::/96)
CVSS Score
5.9
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-918 |
| Vendor | weblateorg |
| Product | weblate |
| Published | Jun 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
WeblateOrg / weblate
>= 5.15, < 2026.6