medium5.9
CVE-2026-50127
Weblate SSRF: outbound URL guard misses some private ranges
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | weblate | >= 5.15, < 2026.6 | 2026.6 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-vmfc-9982-2m45
- https://github.com/WeblateOrg/weblate/security/advisories/GHSA-vmfc-9982-2m45
- https://nvd.nist.gov/vuln/detail/CVE-2026-50127
- https://github.com/WeblateOrg/weblate/pull/19768
- https://github.com/WeblateOrg/weblate/releases/tag/weblate-2026.6