### 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.
Update weblate to 2026.6 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanWeblate SSRF: outbound URL guard misses some private ranges affects weblate (pip). Severity is medium. ### 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.
AI coding agents often install or upgrade packages automatically in pip. A medium vulnerability in a dependency can be pulled into a project through a normal install or update without a human reviewing the change, expanding the blast radius from a single package to every agent workspace that depends on it.
| Package | Affected range | Fixed version |
|---|---|---|
| weblatepip | >=5.15,<2026.6 | 2026.6 |
Fixed versions are reported by the source feed; confirm compatibility before updating.
### 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.
Update weblate to 2026.6 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanWeblate SSRF: outbound URL guard misses some private ranges affects weblate (pip). Severity is medium. ### 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.
AI coding agents often install or upgrade packages automatically in pip. A medium vulnerability in a dependency can be pulled into a project through a normal install or update without a human reviewing the change, expanding the blast radius from a single package to every agent workspace that depends on it.
| Package | Affected range | Fixed version |
|---|---|---|
| weblatepip | >=5.15,<2026.6 | 2026.6 |
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL GuardReported by GitHub Security Advisories (ghsa).
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL Guard