CVE-2026-50127
Weblate SSRF: outbound URL guard misses some private ranges
5.9
MEDIUM
CVSS 3.1
EPSS 0.29%
Description
### 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.
How to fix CVE-2026-50127
To remediate CVE-2026-50127, upgrade the affected package to a fixed version below.
- —upgrade to 2026.6 or later
- —upgrade to 2026.6 or later
Is CVE-2026-50127 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 5.15, < 2026.6
- >= 5.15, < 2026.6
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |