CVE-2026-50127

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

CVSS 5.9 MEDIUMEPSS 0.3%CWE-918

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.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Produtos afetados

WeblateOrg · weblate

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Referências

https://github.com/WeblateOrg/weblate/pull/19768 https://github.com/WeblateOrg/weblate/releases/tag/weblate-2026.6 https://github.com/WeblateOrg/weblate/security/advisories/GHSA-vmfc-9982-2m45